The brightest is Jupiter, southwest of Sagittarius.
At present, the brightest star is Vega.
Due south, you can see Beiluoshimen at the height of 1.30 in the east.
As for that arc, if it is V-shaped, I personally think it is Hegu II, Weaver Girl I and Tianjin IV, which are in the west.
Don't mislead others with the above four rules.