Meng, alongside the other members of the group's lineup, released a cover of "All I Want For Christmas Is You" by Mariah Carey on December 21.

[4] On December 21, she sang the theme song of a movie, Tohoku is spoken all over the world, with Wu Xin and Ma Li.

However, due to the group's two year contracts with Tencent, it was rumored that Meng and Wu would not be participating in any activities in South Korea with WJSN.

[9] However, on August 17, both companies confirmed that after coming to an agreement with Tencent, that Meng Meiqi would be returning to Rocket Girls with Wu Xuanyi and Zhang Zining.

[10] On January 15, 2019, Meng released her first promotional track titled "有种 (Helios)" for the movie, The Wandering Earth.

She was also cast as one of the leading actresses for the fantasy film, Jade Dynasty, which was an adaptation from the xianxia novel, Zhu Xian.