Obviously such claims require evidence, explanation, and reason, not to mention means, motive, and opportunity. Let me attempt to do some of that.
First, yes the Russians also murder people. They tend to do it themselves via their own agents and in some exotic fashion to send a message. Chinese style of assassination is to hire someone else. This has resulted in usually bizarre murders, no one is quite sure why, and probably has to do with lack of skill, mental issues, or overconfidence in who they're hiring at the time. So the quadruple murder of the successful Washington DC construction CEO back in 2015 [1] (his company later went on to build the FDA building), and of the Sun family in Houston a year earlier, was thought to be the MSS at the time [2].
The CEO murdered ran a firm called Gakoda. Their VC firm is mainly Global Tiger Management alumni, who have routinely been suspected of Chinese Intelligence connections over the years. Global Tiger is a large investor in Credit Karma, which has been an FDCS for sometime (Foreign Data Collection Scheme). Simply compare the military academies of China ("the seven sons of national defense") with their current employees and you can solve the rest.
Anyway Gokada in Nigeria competed against another firm, Oride, which is part of the Chinese run conglomerate Opera [3].
The best guess at this point was Gakoda thought they were safe competing against the "chosen" Chinese winner because of their VC firm, but someone else didn't think so, and thus murdered the CEO.
Yes there would have been other ways to subvert the company. One assumes though they wanted to send a message.
At the very least, I hope the background details inform the reader of this comment on some interesting facts.
EDIT: wording
[1] - https://en.m.wikipedia.org/wiki/2015_Washington,_D.C.,_quadr...
[2] - https://thetruecrimefiles.com/sun-family-murder/
[3] - https://techcrunch.com/2020/02/11/after-vcs-spend-millions-n...