That's enough to buy a dozen horses, which shows how scarce this telescope is.

Sun Ming saw everyone standing in place, and did not think that this group of lovely craftsmen were old hats, but took a convex lens from his hand, to put it bluntly, it is a magnifying glass, which is used to make telescopes and microscopes.

He learned the production method when he was in elementary school, so it didn't have any difficulty for Sun Ming, and he just wanted to use it now......

"Saving the Ming Empire from the Son-in-law" Chapter 110 The young master is really a god and a man is also hitting in the hand, please wait a while,

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