W constellation _ which constellation is W constellation?

In autumn and winter, what W-shaped constellation is used to search for Polaris in the Yangtze River valley in China?

Casio poya

Located in the south of Andromeda, north of Andromeda, far from Ursa major. Because it is close to the north celestial pole, it can be seen all year round, especially in autumn. Cassiopeia is m (or w) shaped, which is easy to distinguish.

Cassiopeia is an easily recognizable constellation. Its five brightest stars form a very unique W-shape. Because it is not far from the north celestial pole, this constellation will not fall all night at high latitudes, and it is one of the polar constellations opposite to the Big Dipper.