Many frequent flyers stand by the fact that if you keep yourself hydrated and get plenty of rest the effects of jet lag should go within a few days. However, there are some other ways to stop Jet Lags effects and there are remedies to stop you getting it all together.
Hefei to New York jet lag information
Lets assume you left Hefei at 9:00am. The flight takes approximately 14 hours 27 minutes so you would arrive in New York at 9:12am Hefei time which is in fact 8:12pm New York time.
Your body will be telling you that its 9:12am but actually its now 8:12pm