Tā zài yóuguǎn shàng kàn le hěnduō xué Zhōngwén de shìpín.
He watched a lot of Chinese-learning videos on YouTube.
Tips
usage
油管 as slang for YouTube (油 = oil, 管 = tube, so oil tube, YouTube) is widely used in mainland Chinese internet culture. The official transliteration is 优兔 but 油管 is the dominant informal term.
