The phrase comes from the Chinese custom of three bows, 一鞠躬, 再鞠躬, 三鞠躬, performed at memorial services, graduations and formal ceremonies as a gesture of respect or mourning. On the Chinese internet the middle bow became a standalone joke, reposted as a reaction to anything demanding excessive politeness or a theatrical apology. The exact recording behind this upload is not documented, so it circulates as a user-generated soundboard clip. Short ceremonial announcements like this stay popular because they are instantly recognisable to Chinese speakers and need no context.