What kind of brush (Yang Hao, Lang Hao, double-row brush) should be used to write Yan Zhenqing regular script in calligraphy study?

Strict style, especially the tablet, the font is bold, the stroke thickness is obvious, and the brush is mainly sheep hair. Although its words are full but vigorous, wolf hair or purple hair is definitely necessary. You can try to use the three-color and seven-color brush, and many pagodas can be written in five colors and five sheep hairs. If everyone's writing habits are slightly different, you can slightly adjust the proportion of wolf hair or purple hair to achieve your own convenience.