Ok, let see this argument:
If A then B, A therefore B
Look at the picture below, do you see the red line? & do you see many small islands inside the red line?
For thousands years these islands are the place that many fishermen in SouthEast Asian countries like Vietnam, Philippine, Brunei, Malaysia come there, catch fishes & make a good living on them. However, the China from nowhere suddenly claimed that all these islands belongs them because they found many "
Made-in-China products" in these lands so the China assumed that there are Chinese people living there & thus these lands are the China's territory.
So their argument:
"If the land contains Chinese-made products many thousand years ago then there were Chinese people used to live there, if Chinese people used to live there for thousands years then that land belongs to China's territory"?
Is that a ridiculous argument?