Even if President Trump is able to negotiate a trade deal with China that gives us absolutely equal access to Chinese markets, there will still likely be a trade deficit.
This is only because China is still a very poor country. Even though its GDP is supposedly nearly equal to ours, that GDP reflects the output and consumption of nearly four times as many people.
In other words, Chinese GDP per capita is 1/4 America's.
The Chinese can't afford to buy as much as we can.