Well, it's not clearly specified in the movie, but some viewers speculate it could be cocaine or some other illegal substance. The ambiguity adds to the mystery of the scene.
There were a few software programs that could be used to make gifs. Among them, Waifu2x, Dain/Cain/Rife, Squirrel-Rife were some of the software that was mentioned. These applications all used deep learning algorithms to generate high-quality in-between frames, making gif animations smoother. In addition, Veed also provided an online GIF frame rate translator that could help users change the frame rate of GIFs. These software had their own characteristics and usages, and users could choose the appropriate software to fill in the gif frame according to their needs.
Celebrating the Year was a very popular TV series. In it, Fan Xian and the Second Prince were described as walking emojis. Their expressions and actions brought a lot of fun to the audience. Fan Xian's childhood expression package included the cute way he ate and the perfunctory expression. The Second Prince, on the other hand, had become a meme in the hearts of the audience with his happy and humorous image. The emoji packs of the good guys and bad guys of Qing Yuannian were very popular.