Check the network, if there is no problem with the network, then go back later, and then go back later until you enter the online tax hall in State Taxation Administration of The People's Republic of China.

If it can't be opened, there may be something wrong with the IRS website. If someone else can open it, it may be the certificate problem of your computer, and you are not prompted to install the certificate. If it doesn't work, you can add the website to trust, tools, properties, security, trusted sites and websites, enter the website of the IRS, and try adding and changing a browser.