Created conda virtual environment and inside install numpy 1.18 version, installation method is as follows:

Conda install - name MyEnv numpy=1.18
After successful installation, but withdrew from the virtual environment found numpy versions of the base and other virtual environment was 1.18;

I try to print numpy path under different environment, under the findings point to an MyEnv numpy installation package; If the MyEnv numpy under unloading, other environmental numpy is back to normal,

For help!