Danmu are comments that viewers post at a moment in a video and that then fly across the screen at that same moment for everyone who watches later, like a hail of bullets. The format came from the Japanese site Niconico, and the Japanese reading, danmaku, is often used in English. Chinese streaming platforms such as Bilibili, iQIYI, Tencent Video and Youku all carry it, and the number of danmu a show draws is quoted as a measure of how engaged its audience is. FEUD's danmu interactions passed 100 million within nine days, according to Yangzi Evening News.
Dramas
Where it comes up

The Vanishing Beauty Learned Short-Drama Speed, Not Trust
The Vanishing Beauty packs a reversal into almost every night of its run and swaps the mistress showdown for an asset settlement. It borrowed the pace of China's vertical short dramas and skipped the part a 28-episode drama exists for: making you believe its people.

