Never worked China. The M55 is a specific Miocene formation in the Gulf of Mexico. All of the Miocene formations are numbered.So you were unaware of the M55 subformation in China? And you've worked all over the world?
I was excoriated because I didn't know westies formation name. So I assume that if you didn't know about the M55 subformation in China you are also a faker.
Hmmmm.....