The words above is Baizuo. It is a popular insult used on the Chinese internet.
The first word is "Bai" which means "white". The second word is "Zuo". It means "left". Put them together it means, "white leftist", which is deemed to be terribly insulting. See this article:
The curious rise of the "white left" as a Chinese internet insult.
Excerpt from link:
It is not curious or surprising to me what Chinese people think badly of western leftists. The article goes on to offer their reasons why they think Chinese people are growing contemptuous to the western left. You are welcome to read it but here is my take on why Chinese people think poorly of the western left.Although the emphasis varies, baizuo is used generally to describe those who “only care about topics such as immigration, minorities, LGBT and the environment” and “have no sense of real problems in the real world”; they are hypocritical humanitarians who advocate for peace and equality only to “satisfy their own feeling of moral superiority”; they are “obsessed with political correctness” to the extent that they “tolerate backwards Islamic values for the sake of multiculturalism”; they believe in the welfare state that “benefits only the idle and the free riders”; they are the “ignorant and arrogant westerners” who “pity the rest of the world and think they are saviours”.
It's because the western left is dumb, that's why. Chinese people are realistic, hard-headed people. When they see how ridiculous the ideas of the western left are, they shake their heads in contempt. The left's ideas do not work. They endanger western civilization by accepting Muslim immigrants and weaken their society with the welfare state.
Congratulations, western leftists. You have become a term of insult in Chinese debating forums. Only they call you 'white leftists'. But I know what they mean. Anytime a Chinese want to insult another, he calls him, "a white leftist."
Here is another, interesting excerpt from the same article:
The Chinese like Donald Trump. They see him as a real man.If criticisms of the ‘white left’ in the context of the refugee crisis were mainly about disapproval of ‘moralist humanitarianism’ mixed with Islamophobia, they became politically more elaborate as Chinese critics of the ‘white left’ discovered Donald J. Trump, whom they both identify with and take inspirations from.
Baizuo critics now began to identify Obama and Clinton as the new epitome of the ‘white left’,
They see oBUMa as a superwimp.Trump was taken as the champion of everything the ‘white left’ were against, and baizuo critics naturally became his enthusiastic supporters.