Thank you
Today, I checked compression again after 1 liter gasoline run.
As you said, I removed air filter and open the carb wide open. I checked the leakage of the compression gauge with soap water.
No leakage.

I got just 75PSI.
I think compression is very good, because when I pull a starter, my car is lifted just like when an engine was new. Also, when I drove yesterday, the engine was very powerful just like when an engine was new.

So, I think the compression number I got today is somehow influenced by the length of the cable of the gauge.
Am I right? What's your opinion?