People talking about upping defense spending and expanding nuke arsenal, something China is already doing. But IMO the biggest lesson so far seems that China needs to abandon its current, outdated nuclear weapons policy. Committing to no first use in the current geopolitical environment is beyond foolish.
Russia's nuclear threats work because it has an aggressive nuclear weapons policy: Russia will use nukes against vast convention attacks. This simple stance basically prevented any idea of a NATO intervention.
If China doesn't commit to escalating to nukes if attacked conventionally, especially in a Taiwan scenario, it's basically inviting U.S. intervention if something goes wrong during an invasion.
I don't think usa or Russia or anyone serious buys into chinas no first use policy. Military planners won't care about that and just ignore it like it doesn't exist. That's just to allow china the moral high ground and I think it's good for china, like usa trying to pressure china to sign non proliferation deal with Russia, china can just tell them to fuckoff. Same with Chinese nuke numbers, no one knows for sure. China has undergrounds tunnel network with thousands of km of tunnels. China could have 250 or even 1000, I doubt anyone knows for sure.
The day before china invades or attacks anything serious(like Taiwan), just get rid of no first use policy and declare china has 2000 nukes. I doubt anyone will attack china anyway even with 250 unstoppable nukes which can hit anywhere on earth in less than 30 mins.
Even without nukes Taiwan is china's backyard and china will dominate even if usa does come. Usa will not risk it's existence over Taiwan.
But I agree in general. China should up it's nuke count to 1000 at least asap.