Anyway, here we are with another 1967 picture produced by Harry Alan Towers. Harry was also responsible for Five Golden Dragons (and The Vengeance of Fu Man Chu which is one of the films I will have to do go through again after my PC crash) which also happened to start his wife Maria Rohm who also happened to be in the Fu Manchu film. So you can see a pattern forming. It looks like 1967 was Harry's year for getting films made in Hong Kong with the help of Shaws. There's another link to Five Golden Dragons that I'll point out later and according to Flip's comment it looks as though these films were filmed one after the other from the end of '66 into '67.
Anyway, speaking of Shaws as we just were, the opening scenes of Sumuru were most definitely filmed on the Chinese town lot at the Movietown studios. Shaw Bros fans will certainly recognise the small stone bridge that can be seen in the last screen grab.
This wasn't the only scene filmed at Shaw's and a later post has some scenes filmed outside the famous and iconic Shaw House.