No. You are all wrong. The man has spoken..

‘Chinese are bright‘ and their vaccines as good as western ones – Duterte

MANILA, Philippines --- COVID-19 vaccines developed by Chinese pharmaceutical firms are as good as those made by western countries, President Rodrigo Duterte said Wednesday as he defended the government's seeming preference for China-made vaccines.

"The vaccine that Secretary Galvez is buying is as good as any other vaccines invented by the Americans or the Europeans. The Chinese do not lack brains. The Chinese are bright," Duerte said, speaking partly in Filipino, in a taped speech.

"And they would not venture if it's not sufficient --- if it's not safe, sure, and secure. Those three: It must be safe, sure, and secure. That is the guarantee," Duterte added.

Full: http://inqm.news/laiv

The other thing I've spotted is that if you read the original article properly, it's nothing like as clear cut as yong's summary makes out.

Lots of trials have been run in several countries by several groups of people, and different numbers have been put on different levels of efficacy.

From the article:

Turkey's trial concluded 91%.

Indonesia's trial concluded 65%.

[From elsewhere] The China, UAE and Bahrain trials concluded 79%.

Brazil's trial concluded 78% vs mild-or-worse cases, and 50.4% against very-mild-or-worse cases.

The 50% you're all getting het up on is 50% chance of stopping you having "very mild" symptoms. The chances of it protecting you from "mild" or worse symptoms are much higher, and furthermore not a single participant with the vaccine needed hospital treatment, which would put it at an error bar away from 100% effective at saving your goddamn life.

Even then that's the very worst number across multiple studies, so it's reasonable to assume random chance played some part in that too. It also mentions in that article that the design of the trial was different to Pfizer et al so the results can't be compared.

The big irony of the article is this quote: ""We need better communicators," said Gonzalo Vecina Neto, a professor of public health at the University of Sao Paulo", in an article that itself has clearly done a good enough job of burying the important details under a sensationalist headline that pretty much everyone in this thread missed it.

On top of the above can I put in a more general plea: there's enough bullshit fictional anti-vaccine rhetoric floating around the internet causing massive amounts of harm as it is, without people making things worse by jumping in commenting on articles they clearly haven't read properly.
If you're going to post or comment some criticism of some vaccine or other please make sure you're actually read the damn article beyond the headline. This thing is literally killing people, please try not to make things worse.