I worked with a lady whose married name was Xu, she'd kept it when she divorced him. She was Laotian. (Really cool lady, grew up in refugee camp, married high roller Chinese guy, got t educated, when they divorced she moved to the US and was successful on her own). One day i forwarded her an email from a vendor, his name long and unpronounceable, and she looked at it and said, oh! That is the same as my maiden name! I could see why she kept the last name of the Chinese husband :)