Classic wok design
A wok, as opposed to a traditional frying pan, distributes heat a lot more evenly. This occurs because of the concave shape with sloping sides, as well as the nature of the material woks are made of. All of this means for a dish that is equally cooked throughout and which does not need the same kind of attention and manipulation a regular pan might when cooking the same dishes. This will lead to you making sophisticated and authentic Asian dishes rather than the poor imitations you sometimes unfortunately come across.