In the winter of 2018, Old Li invested 200,000 yuan meant for his son’s tuition into BTC futures. On the day of the 312 crash, he didn’t set a stop-loss, and in a single night it went to zero. After his wife found out, she took the children back to her parents’ home and never came back. In the empty room, all that remained was him staring at the account that had gone to zero.