Visitor from Sirius

In 2250 AD, not long after the formation of the Chinese Star Army, it encountered a great challenge. Several alien spacecraft from Sirius were about to arrive in the solar system. The Star Army sent Jiang Ziya to lead several Nezha destroyers to form a task force and go out to the Oort Cloud to intercept them. As a result, the task force's skills were inferior, and the alien spacecraft drove straight in. Liu Yiming, a 27-year-old Martian, set off from Mars to deliver the latest minelayer to Jupiter. After the group of people traveled all the way to Jupiter, they were told that they needed to follow the Star Army's mine-laying brigade to the Kuiper Belt to perform a "gatekeeping" mission. The key problem is that they don't know when the alien spacecraft will arrive, nor where to intercept it... The alien spacecraft arrived as promised. The Chinese Star Army, which has a huge interstellar fleet, was tied up in the face of the elusive alien spacecraft. Several carefully organized lines of defense were repeatedly breached. The alien spacecraft seemed to be in an uninhabited land and invaded the heart of mankind - the Earth in just a few days! Humanity faces the ultimate test of life and death! How will aliens treat people on earth, and can people on earth protect themselves? Where did they come from and where are they going? Please read the new realistic hard science fiction work "The Visitor from Sirius". The full text has been completed, totaling about 500,000 words.