The standard narrative, Putin and China are consulting each other on what Trump said and how to deal with the American terrorists. This is a serious closed door meeting a four eyed meeting between the leaders of two superpowers.
Look at it from another angle, China and Russia are busy running their own countries and economies. No time for wars. And despite all the accusations and fabricated lies that China and Russia are having colossal domestic problems and struggling to deal with them, and evil America has no problems, winning wars and economy rock solid, everything is fine, Trump is so free to go attacking every country, messing around with the internal affairs of countries, telling countries what they can do and cannot do, and of course, having a great time killing Palestinians, Iranians, Latin Americans for fun.
The truth, Xi and Putin are very comfortable with the peace and economic progress in their countries. They are so free and relax that Putin just drop by for the weekend to have a chat with his good friend Xi and maybe play mahjong in Zhongnanhai, and have a good laugh at the circus that Trump brought to Beijing.
Putin and Xi are having a good time over tea and good food in the comfort of Beijing. No sleepless night, no worries. What more can they ask for? Just let lunatic Trump to continue with his crazy and juvenile tantrums. Xi and Putin do not have to do anything when Trump is working so hard to destroy the evil American Empire.