In November 2015, Lay made his big-screen debut with a supporting role in the Chinese movie "Ex Files 2: The Backup Strikes Back", which was a blockbuster, getting two billion in sales within ten days of its release. He later won the Best Supporting Actor Award at the 2016 China Great Britain Film Festival for his performance. He also wrote and recorded an original soundtrack for the film entitled "Alone (One Person)", which reached number one on Baidu Music Chart, and later won the award for the best original soundtrack at 16th Top Chinese Music Awards and 4th V-Chart Awards. Lay also starred in the Chinese film "Oh My God" and collaborated with his co-stars Coco Jiang Wen and Li Xiaolu on an original soundtrack for the film entitled "Happy Youth", which debuted at number eight on Billboard V Chart.