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Mac computers are our commonly used Internet tools，Sometimes we need to take a break but don’t want to interrupt our current work，So how to lock the screen quickly? Here’s how to quickly lock the screen on your Mac computer，Hope it helps everyone。 Setup steps： 1. Open System Preferences •Click on the Apple icon in the upper left corner of the desktop，Select "System Preferences" from the drop-down menu。 2. Go to Security & Privacy • In the System Preferences screen，Click "Security & Privacy"。 3.Unlock Settings •Click the “General” tab above，Then click the lock icon at the bottom left of the interface。 •Enter the password in the pop-up dialog box and select "Unlock"。 4. Set a password requirement • Select "Require password now" in the "Enter sleep or start screen saver" section，Close the page when finished。 5. Set a screen saver •Return to System Preferences，Click on "Desktop & Screensavers"。 •Select the "Screensaver" tab above，Then click "Trigger Corner" at the bottom right of the interface。 6. Set the trigger angle •In the pop-up trigger angle setting interface，Select a corner as the corner to trigger the screensaver，After the settings are completed, click "OK" on the lower right。 •Now，Move the mouse to the corner you just set to complete the quick lock screen。

QuickTime Player is a pre-installed application on Mac systems，The main function is to play videos，But it can also be used to edit audio。So how to use QuickTime Player to cut and edit audio? This article will introduce the use of Mac’s built-in audio editing software。 1.Open QuickTime Player and click on the launch pad at the bottom of the screen，Select the system's built-in playback software QuickTime Player and open it。 2.Import audio files Drag the audio files to be edited into QuickTime Player，Let go and move on to the next step。 3.Start editing After the audio file is opened，Find the "Edit" column in the menu bar at the top of the MacBook interface，and find "Trim..." from the drop-down menu。 4.Select the clip part and a golden edit box will appear in the QuickTime Player playback window.。Move the selector forward or backward，Move the left and right sides to the part that needs to be cropped。 5.Complete trimming After selecting the clipping part，Click the "Trim" button in the upper right corner of the page。 6.Save the edited audio After editing is complete，Click "File" on the top menu bar of your MacBook，Select "Storage" from the drop-down menu。In the pop-up information filling interface，After entering the relevant content, click the "Save" button in the lower right corner of the page.。 Go through the above steps，You can use QuickTime Player to easily complete audio editing operations。

On a Mac computer，By default, the mail client does not have the QQ mailbox option。If you need to use QQ mailbox，You need to add it manually。The following are the specific steps： 1. Open your mail client •Open your Mac computer，Find and open your mail client。 2. Select Add Account •On the email client page，Click "Mail" on the toolbar in the upper left corner，Select "Add Account..."。 3. Select QQ mailbox •Find and click QQ mailbox in the pop-up page。 4. Enter account information •In the pop-up email information window，Enter your email address and password，Click the "Login" button。If it prompts an error，Please follow the steps below to proceed。 5. Obtain the QQ mailbox authorization code •Open the web version of QQ mailbox，Click the "Settings" option above，Then select "Account"。 6. Start the service and obtain the authorization code •Find “Start Service”，Select "On"，And follow the prompts to send a verification text message using your mobile phone.。After sending is completed，Click the "I Sent" button。 7. Enter the authorization code •Copy the authorization code shown on the left into the password box of your email client，Just click the "Login" button。 go through these steps，You can successfully add QQ mailbox in Mac mail client。

Where are the files backed up by Mac iTunes? Many Mac users don’t know the location of their iTunes backup files after backing up! today，The editor teaches you two methods to find the Mac iTunes backup file path，It is convenient for everyone to directly manage their own iTunes backup folder。 Method one： 1.Open Finder，Click the "Go" option in the menu bar，Hold down the Option key to display "Library"，Click to enter。 2.in database，Find the "Application Support" folder。 3.Go to the lower-level "MobileSync" folder，The "Backup" inside is where the backup file is located.。 Method two： 1.Click Finder at the bottom of the screen。 2.Use the shortcut key Command+Shift+G in the Finder to open "Go to Folder"。 3. Directly copy the following path：~/Library/Application Support/MobileSync，Then click "Go"，Open the "Backup" folder，Inside is the backup file。 Through the above two methods，You can easily find and manage iTunes backup files on Mac。

Firewall can effectively protect your Mac computer from unauthorized network access。Here are the steps to turn on and configure the firewall on your Mac computer。 step one：Open System Preferences 1. Click the Apple icon in the upper left corner of the screen，Select "System Preferences"。 Step 2：Go to Security & Privacy 2. In System Preferences，Click "Security & Privacy"。 Step 3：Unlock settings 3. Click the lock icon in the lower left corner，and enter the administrator password to unlock settings。 Step 4：Open the firewall 4. Select the "Firewall" tab，Click the "Turn on firewall" button。 Step 5：Configure the firewall 5. Click the "Firewall Options..." button，Make further configuration。You can choose to allow or block network connections for specific applications。 Step 6：Complete the settings 6. After the configuration is completed，Click "OK" to save settings。 Summary Through the above steps，You can easily turn on and configure your Mac computer’s firewall，Enhance system security。

Attached is the first week of 2026，That is, the historical 5-minute data of Shanghai and Shenzhen stocks for 5 trading days from 2026-01-05 to 2026-01-09。After downloading the file, please use winrar to decompress it first.，The file directory contains the data files for each stock.，Formatted as TXT text，You can open it directly to view。 If you are using FeiFox，The data import method is as shown below： If you also need historical 5-minute data in other formats，Please leave a message in the comment area。Currently, only historical 5-minute data in TXT format is provided.。

Attached is the 53rd week of 2025，That is, the historical 5-minute data of Shanghai and Shenzhen stocks for 3 trading days from 2025-12-29 to 2025-12-31。After downloading the file, please use winrar to decompress it first.，The file directory contains the data files for each stock.，Formatted as TXT text，You can open it directly to view。 If you are using FeiFox，The data import method is as shown below： If you also need historical 5-minute data in other formats，Please leave a message in the comment area。Currently, only historical 5-minute data in TXT format is provided.。

Attached is the 52nd week of 2025，That is, the historical 5-minute data of Shanghai and Shenzhen stocks for 5 trading days from 2025-12-22 to 2025-12-26。After downloading the file, please use winrar to decompress it first.，The file directory contains the data files for each stock.，Formatted as TXT text，You can open it directly to view。 If you are using FeiFox，The data import method is as shown below： If you also need historical 5-minute data in other formats，Please leave a message in the comment area。Currently, only historical 5-minute data in TXT format is provided.。

Attached is the 51st week of 2025，That is, the historical 5-minute data of Shanghai and Shenzhen stocks for 5 trading days from 2025-12-15 to 2025-12-19。After downloading the file, please use winrar to decompress it first.，The file directory contains the data files for each stock.，Formatted as TXT text，You can open it directly to view。 If you are using FeiFox，The data import method is as shown below： If you also need historical 5-minute data in other formats，Please leave a message in the comment area。Currently, only historical 5-minute data in TXT format is provided.。

Attached is the 50th week of 2025，That is, the historical 5-minute data of Shanghai and Shenzhen stocks for 5 trading days from 2025-12-08 to 2025-12-12。After downloading the file, please use winrar to decompress it first.，The file directory contains the data files for each stock.，Formatted as TXT text，You can open it directly to view。 If you are using FeiFox，The data import method is as shown below： If you also need historical 5-minute data in other formats，Please leave a message in the comment area。Currently, only historical 5-minute data in TXT format is provided.。