Bilibili is a Chinese video sharing website where users can submit, view, and add overlaid commentary on videos. It was founded by Xu Yi in 2009 and specializes in video sharing. The website hosts videos on various themes, including animation, games, music, and education, and is known for its extensive Danmaku (bullet curtain) commenting system. Bilibili has expanded its audience beyond its original niche market and has become a major Chinese over-the-top streaming platform. It offers games, mostly ACG-themed, and has over 332.6 million monthly active users as of the third quarter of 2022.