A Swastika Tomb

I wonder why this memorial has a swastika sign on top of its tomb. Found in the north section of the Manila Chinese Cemetery, the tomb is owned by the Chamsanco Family and dated 1947, two years after the end of the Second World War.
Exif: Nikon D300, Nikkor 17-55 2.8 Lens at 17mm f8. ISO 100, Ambient lighting, Auto White Balance.