What is the best place in China for retirement?

Hunan is one of those places where the climate isn't extreme, where there's no heat or cold, where the air is fresh, and where the water is beautiful.

Hunan Huaihua:

Hunan Huaihua is one of the best cities in Hunan to retire in, with the province's top forest coverage rate at 70.97%, and it's also known as the "Breathable City", where there's no fast-food life, and the pace is slow. In the park in the evening, there are aunts dancing in the square, children swinging on swings, and grandpas playing chess; there are also grandpas practicing calligraphy in the square.

Yueyang, Hunan:

Yueyang attaches great importance to environmental management and is a beautiful city with excellent air quality.

Changde, Hunan:

The Story of Peach Blossom Garden was written here, Changde is a paradise, the city is well-greened, and the city has built eight parks, which provide residents with high-quality leisure and fitness places.

The above are examples I am familiar with There are many other cities in Hunan are very good, here is not an example.