What does Wei Ti mean?

During the Southern and Northern Dynasties, there were many calligraphers, but since the Eastern Jin Dynasty, the calligraphy of the Southern Dynasties was almost completely influenced by the calligraphy style of the "two kings". The most influential monk was Wang Xizhi's seventh Sun Zhiyong, who was diligent in calligraphy. Because he didn't go downstairs for many years, his ink pen was full of twists and turns, implicit and rhythmic, and was well received by all previous dynasties. Due to the importance attached by the Northern Dynasties to grotto statues, a large number of calligraphers wrote and carved statues and inscriptions. Their regular script inherited "Zhong Wang" and developed. The most outstanding thing is that Fang Bi wrote "Wei Ti" with a pen, which formed a unique style and was highly praised by later generations.