Complex sentence: When Guo Zhongshu was in Qi Prefecture, a young man from a rich family was into arts and craved a painting from him, so he treated Guo Zhongshu very well with a daily supply of booze.
Split into simpler sentences: When Guo Zhongshu was in Qi Prefecture, a young man from a rich family was into arts and craved a painting from him. So he treated Guo Zhongshu very well with a daily supply of booze.