Until 1913, the official time standard for the whole of China was still the apparent solar time of Beijing, the capital of the country at the time. Starting in 1914, the Republic of China government began adopting the Beijing Local Mean Solar Time as the official time standard.
(titles) (of a man): Mr (Mister, mister), Sir (sir); (of a woman): Ms (Miz, mizz), Mrs (Mistress, mistress), Miss (miss), Dame (dame), (of a non-binary person): Mixter: Mx; (see also): Dr (Doctor, doctor), Madam (madam, ma'am)
Ms. is the generic term of address for a female, just like Mr. is the generic term of address for a male. In the business world, there's no reason to attach labels to people indicating their marital status.