萧 (xiāo) is a bound morpheme (b.f.) that rarely appears alone in modern Chinese. It combines with other characters to form words meaning 'desolate' or 'bleak', such as 萧条 (xiāo tiáo, depression/downturn) and 萧瑟 (xiāo sè, bleak/rustling). It also serves as a common surname (Xiao). When encountering 萧 in vocabulary, always check the surrounding characters to determine whether it contributes a 'bleak' sense or functions as a family name.