，Siye Qingming，The most beautiful April day in the world，Xicheng District Library joins hands with Guangwai Street Library to welcome2021——“payment”。

Total training points8，6second，Respectively in48day、15、22、29、56day、13，2second。

15Computer rich，、Powerful，。，Former teacherVividPPT，“Alipay”、。

，，Let middle aged and old readers play with intelligent products，Let intelligent technology become a warm rainbow linking the happy life of the elderly。

20214month9