Tencent was down more than 1% at the lunch break. Concerns about the gaming sector come after a tumultuous few weeks of regulatory action against Didi Global and the $100bn after-school tutoring industry that at one point wiped out more than $1-trillion of market value from Chinese stocks. Shenzhen-based Tencent, responding to Tuesday's blistering critique, has pledged to curb game time and even broached a sweeping ban on gaming for children.