What is the east bank of the river among the stars?

Lyra is on the east bank of the river and the eagle is on the west bank of the river.

The main signs of Qin Tian and Eagle are Cowherd and Vega respectively. There is a shining band of light in the sky, which is what people often call "the Milky Way". We look for it according to this light band. To the east of the River is the Cowherd, and to the west of the River is the Weaver Girl.

There are two main ways to find constellations, using the graphic features formed by bright stars and confirming unknown constellations according to known constellations.