Discovery from today's research rabbit hole: "How to adopt a Chinese name," a guide from Taiwan's Ministry of the Interior (2012):
"Please avoid inappropriate words such as: 豬角 (pig knuckle), 蝦 (shrimp), 罔市 (fed whatever), 色 (pervert), 肖維(crazy), 死 (dead) and 老爾 (old), etc."