IMO Coach : Drill vs Think Style

The USA IMO coach Prof Loh is the son of 2 Singaporean Math Prof (dad) & JC Math teacher (mom).
He uses the Chinese “drill” style + American “think” style to beat China IMO Team last few years.

https://m.toutiaocdn.com/group/6764245433339347460/?app=news_article_lite&timestamp=1574935791&req_id=201911281809500100100542211C369EF1&group_id=6764245433339347460