They would probably end up worshipping Japan. All 1.4 billion Jai Hinds.
What Britain did to India was arguably worse than what japan did to China, and Jai Hinds hold a crippling inferiority complex toward anything western.
See. It is possible for Bhakts to worship Chinkis after all @Crang. Once they get past the psychological barrier it'll just come naturally. Appearance wise I can't tell Chinese apart from Japanese either.