on january 26, 2015, it was announced that luhan would sing the theme song for the release of the movie "comrades: almost a love story", in china. the song titled "tian mi mi," was officially released on february 3. on january 28, it was announced that the south korean film "blind" would win a chinese version, titled "the witness", starring luhan. the film was released in china on october 30 of the same year. in february of 2015, appeared in the movie "12 golden ducks". on march 11, legendary entertainment announced that luhan would be cast in "the great wall", directed by zhang yimou along with matt damon, andy lau and pedro pascal. the film was released by china film group in china on december 15, 2016, and in the united states on february 17, 2017 by universal. on may 27, 2015, it was revealed that luhan and taiwanese singer david tao had recorded the theme song for the 2022 winter olympics. the song titled "please come to the great wall to ski" had its music video released in july 2015. on august 28, he became a fixed member of the chinese version of "running man" program, titled "hurry up, brother". on september 11, luhan was confirmed in the movie version of the popular web drama "the lost tomb", titled "time raiders", playing wu xie. released by le vision pictures on august 5, 2016.