Chinese tank development has come a long way in a short period, but I highly doubt the command staff of the PLA are satisfied yet. For export and for indigenous forces the type 99 is today more then a match for Russian or many lesser NATO offering but tanks are still changing, and the Chinese still have gaps to fill. Active defenses, counter technologies to active defenses, IR camouflage systems, remote weapons, higher velocity rounds, advanced cloud based command and control, signature control, power efficiency. I don't see the Chinese as suddenly breaking out with hover tanks but more or less getting to par with roughly equivalent equipment.
now to the important things, in the event of a Godzilla attack, the PLA is not ready. I am sorry but no. Godzilla can sink the entire fleet of the PLAN and turn whole army corps into smoking charcoal. Best Beijing could hope for... Indeed the world is that BIG G is merciful and decides to just settle down on the Senkaku there by rendering all claims of the islands mute, as no one would want them if they had to deal with a short tempered fire breathing 50 story multimillion ton amphibious walking nuclear weapon.