Necessary Preparations: Because QQ2013 has signature verification, you cannot log in after modifying the signature. However, you can use Lucky Patcher to bypass the system's signature verification. Please follow the steps below to install the APK (it is widely available online and in app stores, so the link is not provided) (Please uninstall the previous version of QQ before installation). First, install and open Lucky Patcher (the phone must be rooted). Press the phone's menu key, select Core Modifications, then choose 'Always Apply Signature Verification' and 'Disable ZIP Signature Verification' and check them (do not select the third option!). Then select Apply. The phone will automatically reboot, and then you can install QQ.
MOE-ify QQ2013 4.0.2: This version is modified based on MOE-ify QQ2013 4.0.1. First, thanks to the original author @applemiku. Features: 1. Updated from 4.0.1 to 4.0.2. 2. Modified the icons, using Kyoumei icons. 3. Fixed the dialog box bug that occurred with stretching. 4. Fixed slightly distorted opening pictures and background images. 5. (Not successfully tested) The classic ringtone in sound notifications was changed to a Japanese maid voice, but on my phone, the sound did not play for some reason (same for me). Download link: pan.baidu.com/share/link?shareid=481778&uk=2836701846
