Will Smith has thanked Jackie Chan for “helpin’ to raise” his youngest son. The ‘King Richard’ actor has marked the martial arts legend’s milestone 70th birthday on Sunday (07.04.24) with a heartfelt Instagram post in which he praised the ‘Rush Hour’ star for the “eternal impact” he left on their family when he starred with Jaden Smith, 25, in the 2010 remake of ‘The Karate Kid’. Sharing a series of photos of Jaden and Jackie, Will wrote: “Happy 70th (wow) Birthday to My Guy @jackiechan!! In addition to making some of my FAVORITE movies of all time, creating some of the CRAZIEST moments that h…