My fast argument is very simple: if the TCM is really that good, why we can see that average life expectancy in China is only 76.1 (similar to Hungary, Argentina, Jamaica, Slovakia). And how is it possible that average life expectancy is 5 years more in Greece, Germany, Slovenia (also known as Slovakia). With such a great medicine, I would expect to see all the Chinese becoming the centenarians.
Scientific point: with the advancement of the Light sheet fluorescence microscopy I would be incredibly surprised that we missed anything imaginable in our bodies. Because now we can see how every individual cell is moving during the development. There would be some strange nodes, some strange spots - but we don't see them.
Actually, Chinese papers often do make claims that their approach to curing cancer, for example, has a 97% success rate. It's a wonder how they get away with it!
Light sheet fluorescence microscopy, though cool, can't compete with the concept of the meridian lines being too small to see, but not too small to see. This kind of logic is infallible, unfortunately.
Oh yes... The lines are too small to be seen using the microscope, but the "needle poker" can clearly see or feel where they are. Right...
That's not a very good argument.
If we made your country the industrial hub of the world and you threw away all the garbage in your own backyard and the air became unbreathable in many cities on many days, and tons of your population smoked cigarettes on top of that, what do you think that would do to life expectancy.