i think there is a title in japan called 10-dan, but it is not a rank

i think there is a title in japan called 10-dan, but it is not a rank

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送交者: pgss 于 2016-03-09, 21:20:33:

回答: is there a 10-dan pro? 由 cornbug 于 2016-03-08, 21:54:34:

, just a title like a champion