TO REACH ZHENGZHOU (HENAN PROVINCE) FROM MUMBAI (INDIA)

I WANT TO GO TO ZHENGZHOU,CHINA (PC 450100) FROM MUMBAI (INDIA) PL. INFORM ME
THRU' WHICH FLIGHT I HAVE TO FLY FROM MUMBAI. SHOULD I TAKE FLIGHT FROM HONGKONG ?
PL. REPLY ME SOON WITH NAME OF AIRWAYS AND FLIGHTS , I HAVE TO CATCH.
THANKS
PANKAJ