I'll give it a go, 我 会 尝试 的 Pinyin - Wo hui changshi de
you will need to install the Chinese language pack for Win 10
Settings | Time & Language | Language | Add a language
After installing you should be able to switch languages from the icon in the taskbar.
The icon is a chinese character for English 英 or Chinese 中
in chinese mode type wo and the options will automatically appear in a context menu, pick #1 for 我 = I
Any unicode enabled editor or bcx editbox should be able use it in Pinyin - romanized type text
I do use notepad to edit my .RC files with Chinese - save as UTF16LE. Mostly I am cut and paste from email as I don't speak Chinese。
Google translate is also a great help!!
I have not tried to use INSTR on the Chinese language and I'll need to do some research on that.

I just used BCX_GET_TEXT$ and saved it to file.
You can also search the inet for “Chinese input method” or “Japanese input method”.
I hope this helps