What is "sudhana"

Sudhanakumâra , mainly known as Sudhana and Shancai or Shancai Tongzi in Chinese, and translated as Child of Wealth, is the protagonist in the next-to-last and longest chapter of the Avatamsaka Sutra. Sudhana appears in Buddhist, Taoist and folk stories; in most of them he is one of the acolytes of the bodhisattva Avalokitesvara ( Guanyin) and is paired with Longnü (Dragon Girl). He and Longnü being depicted with Guanyin was most likely influenced by the Jade Maiden and Golden Youth who both appear in the iconography of the Jade Emperor. A fictionalised account of Sudhana is detailed in the classical novel Journey to the West, where Sudhana is portrayed as a villain, Red Boy, who is eventually subdued by Guanyin and becomes the bodhisattva's attendant.