Lake Tai
The name comes from Cantonese 塌菜 "taap3 coi3" or "drooping vegetable", often rendered 'tat soi', 'tat choy'. However, its natural habitat is alongside the Yangtze River, where it is called 塌棵菜 (Shanghai and around Lake Tai, Wu thaq-khu tshe), 烏塌菜 (Lake Tai and Nanking, Wu wu-thaq tshe, literally "dark drooping veggie"). Mandarin borrowed the name 塌棵菜 (Pinyin "tā kē cài"). It is also called 'Chinese flat cabbage', 'rosette pakchoi' or 'broadbeaked mustard', 'spoon mustard', or 'spinach mustard'.