HONG KONG — China said on Thursday that it would reduce tariffs on $75 billion worth of American-made goods, a step that signals its intention to hold up its end of a trade truce with President Trump despite the coronavirus crisis unfolding largely within its borders.

That truce most likely will not last long, however, if China does not carry through with the part of the deal Mr. Trump prizes most: a promise to buy about $200 billion in goods from the United States over the next two years.

The move announced on Thursday was widely expected as both sides back down from an increasingly punishing trade war. In January, the two governments reached an interim trade pact intended to forestall more tariff increases. The deal represented a freeze on the trade war rather than an end, and the countries have pledged to continue talks.

The United States agreed to reduce tariffs on $120 billion worth of Chinese-made goods as part of that deal, and on Thursday, China reciprocated. China’s Ministry of Finance said it would essentially halve tariffs it placed in September on American cars, crude oil, soybeans and other goods. The tariff cuts would go into effect on Feb. 14.