The "Uncle Pie - Documentary Charging Series" is a paid exclusive documentary collection created by Bilibili UP host "Uncle Pie" (食贫道), produced by former CCTV war correspondent Zhang Jun (Uncle Bing) and his team. The series includes works such as "Lost in Tokyo," "How to Return Home," "Blessed Land," "Canaan Orphans," "Hello America," and "Fashion Bible," each lasting 2-3 hours. Adopting a "no judgment, only presentation" documentary style, it allows viewers to think independently through authentic recordings.