Xiaomi's new so-called Mimojis launched with the Mi CC9 - an AR feature that's strikingly similar to Apple's Memoji. And Xiaomi's animated emojis are so similar to Apple's that the Chinese company accidentally put out its competitor's promo video of the Memojis on its website. However, the Apple-sourced videos have since been taken down from the Mi CC9's product page on JD.com and Suning. Xu Jieyun, Xiaomi's general PR manager said on Weibo that it's just a mistake on behalf of Xiaomi's staff. Someone uploaded the wrong content. Perhaps someone from Xiaomi watched Apple's Memoji...
Source: https://www.gsmarena.com/xiaomi_used_an_apple_ad_to_promote_its_new_mimojis-news-37979.php