What does girl xb mean?

XB actually means Xiaobai, and the first letter of Xiaobai Pinyin means novice and novice, which is a network term. The "small white area" on the forum refers to novices.

Life common sense refers to the scientific knowledge summarized by people in their daily lives, which can be divided into physics, biology, chemistry, medicine, first aid knowledge, geography, safety, cosmic celestial bodies, natural phenomena and other common sense contents.