It’s possible - but I doubt China is the culprit here. They are trying to weaken their currency against the dollar and while the 10 year and the value of the dollar aren’t explicitly linked there is a very close correlation.
Most likely the source of the current yield spike is a combination of a number of factors all tied to the value of the various markets around the world and possibly other debt holders liquidating for various reasons related to the tariffs.
Whatever the reason - it is a bad sign.