Here is more:
https://www.scmp.com/business/article/3178007/china-southern-airlines-scraps-boeings-737-max-its-fleet-deliveries
Btw, the price of C919 is doubled to $100 million. So An Airbus A320 seems a better deal.
Btw, that deliberate dive of MU5735 was because they were transporting military goods to Russia!!!