They are Mitsubishi's uni-ball AIR, Gou Xianbi, the soft head of cherry blossoms, and Wu Zhu's painting stories.
First of all, let's talk about Mitsubishi's uni-ball AIR, which is called the black science (intelligence) (business) direct-liquid pen.
Next, Gou Xianbi, soft-headed cherry blossoms. FB and BB are recommended here. MB is too thick and too short to simulate brush calligraphy.
In fact, as long as the funds are abundant, Wu Zhu's Wannianzhen brush head brush is an excellent solution. This can basically provide all traditional brush experiences except ink color.
In terms of writing function, there are many substitutes for writing brush as a writing tool. From the Shang and Zhou Dynasties in China to the Qin Dynasty, writing tools were all knives. Until the Han dynasty, there was a writing brush, and now there are very easy-to-operate ballpoint pens, pens and pencils.