What you want to ask is why buddhist nun of Nianci 'an is a grass prefix, because Nianci 'an chose a grass prefix when registering a trademark.

During the reign of Emperor Kangxi in Qing Dynasty, Jin Yang, the county magistrate, lost his father when he was young, and his mother coughed with lung deficiency due to long-term hard work. The dutiful son Yang Xiaolian visited famous doctors to treat his mother, and finally got the prescription of honey-refining Chuanbei loquat cream from the doctor Ye, which cured his mother's illness. To commemorate the kindness of his mother and Ye, Yang Xiaolian named loquat cream "Nianci 'an" and drew a trademark of "filial piety" to warn future generations not to lose the traditional virtue of filial piety.

Nian Ci 'an is a kind of medicine specialized in moistening lung and resolving phlegm, relieving cough and asthma, relieving sore throat, promoting fluid production and benefiting qi, regulating heart and reducing fire.