Just promise them the Indian market. "We'll vacate and leave to you the whole Indian: EV, luxury car, super high end electronics, and soap and shampoo markets"
Trump is also susceptible to flattery and to bribery. China is no doubt already seeking the means to ingratiate itself to him, his family members, and to Musk (via Tesla), offering generous investment perks in China for Trump Inc. and other businesses owned by Ivanka and Jared.
I would not attempt to placate Trump if I was China. He will only interpret that as weakness and will be emboldened to act more aggressively toward China. People with bully mentality like Trump only respect one thing - power.