@andriy - if you are ever unsure if a record is being captured by a place, especially with the simplified border used on that page, just open the record, click on the ‘Details’ link under the map, and look under Encompassing Places.
For example this one of yours https://www.inaturalist.org/observations/9597437 which ‘appears’ outside the Chinese border drawn can still be seen to be within China according to the more complex map internally stored.