This week on the Caixin-Sinica Business Brief: Twenty-one marathon runners die in a storm in northwestern China; ByteDance co-founder Zhāng Yīmíng 张一鸣 announces that he will step down as CEO of the company; and Yuán Lóngpíng 袁隆平, the “father of hybrid rice,” passes away at age 90.

In addition, we speak with Caixin Global financial news reporter Timmy Shen about the recent crash in cryptocurrency prices and what this means for the future of the market.