Symptom
During sample importing, the error message "Failed to connect to gitee.com port 443: Time out" is displayed.

Solution
Check the network connection. If the network is restricted, you need to access the network through a proxy server. Perform the following steps to configure the Git proxy information:
If the password contains special characters, such as at signs (@), number signs (#), and asterisks (*), the settings may not take effect. As such, you are advised to replace the special characters with ASCII codes and add a percent sign (%) before the ASCII codes. Refer to the following for the mapping between common symbols and ASCII codes:
git config --global http.proxy http://proxyUsername:proxyPassword@proxy.server.com:port