The problem is that, credit to u/EnclavedMicrostate, there's no such thing as a 'Silk Road', and there would have been no reason for a Chinese merchant to depart the territory of China.

To add to the other links and answers, hopefully one of my old answers will also be helpful:

Folklore in western Europe puts much emphasis on the silks and spices brought from the east through the silk road as in Il Milione by Marco Polo. Was there any equivalent the other way around? Eastern merchants awed by what saw in western markets and writing about it?

In brief there were lots of things from the west that the Chinese were interested in, although since "the silk road" was not a real thing, Chinese merchants never really travelled to very far west themselves, and they received products from the Middle East/Europe/Africa indirectly through intermediary trade.