Hot and sour powder is one of the traditional snacks in China, mainly distributed in Sichuan and Chongqing. Here are some answers that may be helpful:

1. Chengdu, Sichuan: Chengdu's hot and sour powder is famous for its delicious taste and delicate taste. There are many famous hot and sour powder brands in Chengdu, such as Chen Mapo and Taolin.

2. Chongqing: Chongqing's hot and sour powder is famous for its strong spicy taste and rich taste. There are many famous hot and sour powder brands in Chongqing, such as Baijia Chenji, Picking Small Noodles and so on.

3. Changsha, Hunan: The hot and sour powder in Changsha, Hunan Province is famous for its spicy and delicious taste and rich soup. There are many famous hot and sour powder brands in Changsha, such as Jinsha River and Laoguandong.

4. Guiyang, Guizhou: The hot and sour powder in Guiyang, Guizhou is famous for its sour and refreshing taste and delicate taste. There are many famous brands of hot and sour rice noodles in Guiyang, such as Guizhou Hotel and Mr. Hot and sour rice noodles.

To sum up, hot and sour powder is one of the traditional snacks in China. Hot and sour powder in different regions has different characteristics and flavors. You can choose your own brand and origin of hot and sour powder according to your own tastes and preferences.