China and Russia are on opposite sides here, so maybe they'll cancel each other out and the American people can decide this one on their own.
Clearly the American people can make a decision on their own if they base their votes on reliable, uninfiltrated information sources. Alas, given recent experience, that doesn't seem likely.
In any event, it does not appear from the publicly-available intelligence assessment that the Chinese government and individuals working at its behest are currently trying to influence or disrupt the election the way the Russian government is.
The threat from China is more in the nature of its economic and technical influence―particularly the real possibility that concealed firmware "hooks" in communication infrastructure devices manufactured in China (e.g. switches used for high-speed wireless transmission) will be exploited by the Chinese government to steal intellectual property, and that mobile application software will be used to eavesdrop on researchers in the United States and its allies.
The threat from Russia involves its attempt to corrupt our election system. Not just to influence the outcome of the presidential election in Trump's favor, if it can, but to provoke doubt among voters about the legitimacy of the democratic process. Based on the information that has been released by the director of U.S. intelligence, it appears the Russians are using the same techniques they used in 2016.
The Chinese approach is more subtle and long-term, albeit not ultimately less dangerous―
in the long term. But given
how the Russian efforts played out in 2016, Putin's government appears the be the more imminent threat.