Client support: Android, Apple, Web, PC, public account
Development language: java+Mongodb database
Front-end packaging tools: VS 2019, Android Studio, Xcode
Server building tool: Pagoda panel + Xshell or FinalShell
Server configuration: Configure 8-core 16G broadband 10M or more
Server system: Linux Centos 7.664 bit
See the video construction tutorial in the compressed package for details.