The 1970 Asian Rugby Championship was the second edition of the tournament played in Bangkok, Thailand. Seven countries played round-robin matches in two pools and the first, second, and third place of each pool played placement matches. Japan won the tournament.
 Jan 10
 Jan 12
 Jan 11
 Jan 13
 Jan 15
Placement matches.
Final.
Source:
Notes.
As of 16 June 2022, the results in Asia Rugby website are incorrect.
References.
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The above link contains detailed game results. 
T is for try worth 3 points, G is for goal worth 5 points (including try), PG is for penalty goal worth 3 points, and DG is for dropped goal worth 3 points.
 For the scoring detail, refer to History of rugby union