Yes! I just tested it on Android. 🖤 If you're using the bilingual (Chinese/English) version of Chapter 2, you can install the Chapter 3 version directly over it without uninstalling the old version first. I tested it myself, and my save data carried over and loaded normally! Please make sure not to uninstall the previous version before installing Chapter 3. 🥹 If you're not sure which version you have, let me know and I'll try to help!