Long the journey, hard the way,
But his heart was gay;
For, was he not a prince both strong and brave,
Vowed a princess fair to save?
And he slew the dreadful dragon,
Even cut off his seven heads;
And in his cave he found the princess
Bound to her lowly bed.
Then came they both back to the land
Of the mighty Emperor Fu Manchu,
To claim his reward, the dainty hand
Of lovely Ming Lo Fu.

Charlie Chan is in Shanghai this time. Strange that the Chinese detective has never been set there before, but that oversight is patched up very nicely in this film.  It’s right in line with the eight previous Chan pictures (…) Warner Oland, the merry Swede who has won himself an international rep as a Chinaman, still handles the Chan assignment with competence and ease.  This time he’s after a gang of dope smugglers in China (…) After Earl Derr Biggers died last year Fox seemed to be faced with the possible loss of the Chan stories as future screen fodder.  They haven’t at all.  By assigning others to carry the character on, they’ve got themselves a steady stream of popular material. — Variety, 1935.