'The multi-storey pagoda came to Japan from China in the sixth century. As in China, they were first introduced with Buddhism and were attached to important temples.'
I initially thought this meant Pagoda was introduced in China with Buddhism
However, the answer to a question regarding whether China or Japan, or Both, initially had a religious purpose for the pagodas, was BOTH. (No latter parts of the passage state anything about religious purpose, only this sentence)
Does that mean As in here is Just like in?