变化 (biàn huà): to change; change

The weather changes quickly; you should wear more clothes.

In recent years, my hometown has changed a lot.

His attitude suddenly changed, and everyone was surprised.

After learning Chinese, my life has undergone great changes.

As the seasons change, the color of the leaves also changes.

The weather here changes very quickly.

Haven't seen him for years; he has changed a lot.

The city has undergone huge changes.

With the change of seasons, the leaves turned yellow.