■ PubMed School, Xiaoxi PubMed School, PubMed Database, PubMed Gang, Kaobo Gang, Baidu Library, Netease Cloud Open Class, Tuhua Online, China University Massive Open Class, Cashew PubMed.

Note tool application

■notability, goodnotes, Curtain, OneNote, Scanning Almighty King, MarginNote, Xmind, Master Handwriting, Thousand Notes, Prodrafts, Impression Notes.

Necessary application of learning English

■ Mint reading, scallop listening, inked words, daily English listening, English funny dubbing, fluent spoken English, English for 6 minutes, light listening to English, lazy English, Mint English foreign periodicals, cheese words.

Self-discipline and planning APP

■ Tick the list, turn the page clock, don't play with mobile phones, time planning bureau, time sequence, daily, tomato ToDo, CoStudy, YoYo daily.

Enhanced horizon application

■ Station Cool, DailyArt, Behance, Daily Forbidden City, Chinatown. Treasure, loft, red board newspaper, iMuseum, little red book, vision, carpenter.

Photo retouching APP

■ Wake-up camera, butter camera, Yimei, Meitu Xiu Xiu, Yitian camera, Tian Tian P picture, light beauty camera, foodie, no camera, spring, VSCO.