Speaking of plants in Hong Kong, Professor Hu is well known, but little known is that she has a "special orientation" in studying plants-starting from the relationship between plants and Hong Kong people, she has become an expert in "herbal tea" in Hong Kong. She smiled and pointed out that studying plants is part of studying life science in Hong Kong. Hong Kong people use herbal tea because they are uncomfortable in a hot and humid environment for 365 days a year. Hong Kong people gradually invented herbal tea to detoxify and reduce fever. "They use more than one plant, and there are a dozen to twenty-four kinds of ordinary herbal tea. Together, they have different effects. There is everything in herbal tea. You can absorb anything you need when you drink it. " She summed up the art of drinking herbal tea in Hong Kong.

Professor Hu Xiuying is best known for her "Three Winter Teas" jointly developed with the Chinese University of Hong Kong. "Sandong Tea" is composed of three medicinal parts of Ilex, namely Radix Angelicae Pubescentis, Cortex Ilicis Rotundae and Ilex kudingcha, and other medicinal materials. It is suitable for the initial onset of wind-heat cold, such as sore throat, headache and fever.

Gangmegan is the root of holly. Bitter, sweet and cool, it has the functions of clearing away heat and toxic materials, promoting fluid production and quenching thirst. Commonly used for colds, sore throat, toothache due to wind-fire and lung carbuncle.

Ilex rotunda is the dry bark of Ilex rotunda, which tastes bitter and cold. This product can clear away heat and toxic materials, promote diuresis and relieve pain, and is often used for summer dampness, sore throat, damp-heat diarrhea, abdominal distension and pain.

Kuding tea is the leaf of Kuding tea. Bitter, sweet and cold in nature, it can clear away heat and toxic materials, clear the head, quench thirst and diarrhea, and can be used for headache, toothache, red eyes, fever and polydipsia.

Holly is a deciduous tree or shrub, with evergreen or deciduous leaves, entire or dentate, small stipules, small flowers, white, pink or purplish red in color, berrylike drupe, usually spherical. The difference between the components in "Sandong Tea" and the original plant morphology lies in: the flowers of Holly are solitary, and the fruits are black when they are ripe; The flowers of Ilex latifolia are cymes, the fruit is red or black when it is ripe, and there are glandular spots on the back of the leaves; As for Ilex macrophylla, when it matures, it has many flowers and red fruits.