"First you said they couldn't figure out the right dimension is 12m without hacking into CALT to get blueprint. That's why Chinese authorities could challenge them. And why didn't Chinese authorities challenge them by saying "there is no way in hell the LM-5 core stage contains a metal pipe with those dimensions"?"Use some common sense, man. The right dimensions I'm referring to are primarily thickness of pipe and secondarily a minimum 12m to the length, because as I said the end of that pipe is clearly broken off from an originally longer pipe. So in fact if your theoretical non-existent fantasy swindlers wanted to make sure that there is such a part on the LM-5, they would have hedged their bets and manufactured a much shorter pipe than 12m.
"I said there's no fuel tank of that length. It matter becuase there're only two fuel tank in the core stage, a LOX tank around 7 m stacking on top of the LH2 tank around 20 m long. Only the LOX tank needs a long fuel pipe to feed the engine beneath the LH2 tank, which means the pipe has to be over 20 m in length. So there's no way 12 m can be a right dimension."
It makes zero difference, and your arguments here are completely nonsensical. Completely. Look at the image I provided. There are pipes of various shapes, thicknesses, and lengths, some having to do with fuel, some having nothing to do with fuel. There are pipes that stay inside tanks, pipes that run along the entire length of the stage, pipes that run between tanks, pipes that are conduits for cabling/electrical, pipes for things you have clearly not been able to imagine, but yet here they are.
