# 1. check path of pip config
# command: python3 -m pip config debug
# output: /root/.config/pip/pip.conf

# 2. replace below code into your pip config

[global]
index-url = https://mirrors.aliyun.com/pypi/simple/
extra-index-url= https://pypi.tuna.tsinghua.edu.cn/simple
                 https://mirrors.sustech.edu.cn/pypi/web/simple

[install]
trusted-host = repo.metax-tech.com
        mirrors.aliyun.com
        pypi.tuna.tsinghua.edu.cn
        mirrors.sustech.edu.cn
        download.pytorch.org