Hasn't been picked up in English press yet but looks like the incident occurred on yesterday's CA428 Hong Kong to Chengdu service.
The plane turns far too early after taking-off and has to rapidly climb to avoid the hills.
ATC audio has been leaked here: https://www.youtube.com/watch?v=b8BNQKzNfGw
HK01 article (requires translation): https://www.hk01.com/%E6%B8%AF%E8%81...8D%B1%E6%A9%9F