After all this was done, the rubber and the pushrod were attached together, and it was a perfect fit.

Push the syringe a few times and there is a lot of air gushing out of the front end and no air leakage at the rear end.

"That's it, as long as you find the right size of feathers, you can get an intravenous injection."

Sun Ming said excitedly.

After all, this is also subversive......

Chapter 172 of "Saving the Ming Empire from the Son-in-law" The first intravenous injection is being hit by hand, please wait a while,

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