The Chinese government wants to promote their own agenda. Let them do so using their own advances, not by stealing the advances built by cultures which actually encourage advance.
Let the culture which reveres "ancient wisdom" prove its value by using feng shui to launch their space vehicles.
The drill isn't just for killing the bacteria inside cavities (called "caries" by dentists). The drill is used to make an undercut hole large enough to get stuffed with filling material. In doing so, it removes not only the bacteria but also the food-material that the bacteria was growing on. A plasma jet won't do either of those things, so they would still need to use a drill.
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