1. The soy sauce in Guangdong recipes is a kind of soy sauce between soy sauce and soy sauce. It's Cantonese soy sauce, but it's strictly different from ordinary soy sauce.

2. Soy sauce is bright in color, not black in color, not light in color and sweet in taste. These characteristics are very consistent with the taste of Cantonese cuisine.

3. Soy sauce is also a liquid condiment brewed by soybean or black bean through fermentation process, so it is also soy sauce in essence.