import base64
base64.b64decode(base64.b64encode(b"\xe4\xb8").decode().encode())
base64.b64decode(base64.b64encode("中国".encode()).decode().encode()).decode()
import base64
base64.b64decode(base64.b64encode(b"\xe4\xb8").decode().encode())
base64.b64decode(base64.b64encode("中国".encode()).decode().encode()).decode()