A tariff is what you pay to the government of the port of call to get the item you shipped.

When you pay $1000 for a DJI drone and it get's to Seattle the US government says "pay us $600 or it goes back on the boat."

The Chinese company sees literally zero impact other than possibly less orders and probably a wave of refused merch. Which they might keep some or all of the purchase price of anyway.

Russia wants to pit the US and China against each other to distract and destabilize them both. So all of this is great for Russia's bottom line.

The tariffs got them elected. The fallout of them is a write-off and not their problem. They were the means to an end for votes and swaying opinions and they did their job.