What stars are there in the summer night sky?

I don't know your geographical latitude. In the northern hemisphere, famous constellations in summer are Lyra, Eagle, Cygnus, Scorpio and Sagittarius. The famous bright stars are Altair (bright star in Lyra), Vega (bright star in Lyra) and Tianjin IV (bright star in Cygnus). These three are collectively called the Summer Triangle, which is similar to a 30-degree right triangle in the night sky. In addition, there are