The online name Danwanchu may have been chosen for the following reasons:

1. Love of cooking: The word "chu" means love and enthusiasm for cooking. This online name may come from my interest and love for cooking, and I like to try various delicacies in the kitchen.

2. Love innovation: The word "projectile" can mean small, exquisite and unique. This online name may imply a pursuit of innovation and uniqueness in cooking, and a love of trying new cooking methods, seasoning combinations, and dish ideas.

3. Personalize your online name: Choosing a unique online name can establish your personal image and brand on the Internet. The online name "Danwanchu" may be because the author wants to show his personality and characteristics in the field of cooking, so as to attract people who also love food.

Extended content: In the field of cooking, people have different online names and titles, some because of their professional background, and some because of personal preferences and characteristics. Choosing an online name that is relevant to you can showcase your personal cooking style and characteristics, and also attract like-minded people to communicate with each other and share their food experiences. At the same time, in the Internet age, screen names have become people's identity in the virtual world. They can show their personality and charm through a unique screen name.