Who Actually Has the Leverage in U.S.-China Trade Talks?

The article informs that American and Chinese negotiators are planning to resume trade talks. It mentions that China recently exempted some U.S. goods from its retaliatory tariffs and is signaling that it may allow the private sector to resume purchasing American agricultural commodities. It also mentions that the U.S. President Donald Trump claim that the trade war is weakening Chinese manufacturing and destroying millions of jobs.