Truth defended? If they care about truth, they wouldn't act that way to begin with.
Ukraine defended? But they don't even seem interested in learning more about that country.
US or NATO defended? It doesn't need a few Chinese commentators doing that in a Chinese forum. And there are no Westerners to witness it here.
Western values defended? But they are not doing a good job in accomplishing this.
So what are they defending or defending against?