When did Qingdao Metro Line 4 start?

Construction of Qingdao Metro Line 4 started at 20 17. Relevant information shows that on June 8, 2007+2065438+2007, the underground space of the first phase of Qingdao Metro Line 4 has obtained the construction project planning permit. At the same time, the first phase of Line 4 has been extended eastward, with Laoshan No.6 Middle School, Xidengying, Dahe East Station and Dahe East Station as the terminal. In June, the first blasting operation of Qingdao Metro Line 4 was carried out in the inclined shaft of People's Hall Station. It indicates that Qingdao Metro Line 4 project has entered the main excavation stage. On July 1 day, the inclined shaft of People's Hall Station in 0 1 work area of Metro Line 4 successfully carried out the first blasting operation since the start of the whole line, and the first shot of the whole line blasting construction was fired, marking the official entry of Metro Line 4 project into the main excavation construction stage.