The Mysterious Treasure Chest

The Mysterious Treasure Chest is an urban system-flow novel by the web author "Princess Chang," completed as a serialized online work at roughly 1.3 million Chinese characters. No print edition appears to exist. The protagonist, Yang Hao, is a senior at Qingjiang County No. 1 High School. From an ordinary family whose parents work away from home, he lodges in a storage room at his cousin uncle's house. A mediocre student, he is beaten up by a group led by the rich kid Liu Yunlong after he helps the school beauty Xiao Yating to her feet. One stormy night, a blue light enters his old Redmi phone—one with no SIM card—and an icon labeled "Mysterious Treasure Chest" appears on a starry background. From then on, he can check in daily to obtain treasure chests of various tiers, which yield love potions, X-ray glasses, experience points, and all manner of surreal items. In the opening, the "love potion" accidentally breaks during the school's pep rally, and Xiao Yating walks up to him in front of everyone, turning this invisible boy into the school's center of attention overnight. More chests soon yield further abilities, and the protagonist "levels up by opening chests" through campus, family, and city life, gradually reversing the contempt he has endured. The work follows a typical urban power-fantasy formula: the treasure chest is both his cheat-like advantage and a source of humor and suspense. The main thread follows how the protagonist uses and restrains these abilities, blending campus routine, everyday street life, and light comedy. It is one of the completed works archived by proofreading sites such as Zhixuan Cangshu.