1, server failure: website server failure will lead to abnormal access.
2, network problems: network connection failure or slow speed will also lead to normal access.
3. Website maintenance: The website will be maintained regularly, and it may not be accessible normally during the maintenance period.
When Mr Cheng Peng was a child, his family was very poor, so his father went to work in other places. At that time, he was very naughty and was beaten almost every day. O