Jiayou, literally translated as add oil, is a long-established Mandarin cheer used across China and by Mandarin speakers worldwide to encourage effort and perseverance. It is heard at school competitions, football matches and televised talent shows, where crowds chant it in unison for a team or performer. As short clips of sports moments and reaction videos spread online, the single shouted version became a handy audio meme for creators outside China too, because its rhythm and tone convey support even to listeners who do not understand the words.