Question: Between Yam and Pueraria, which flower is used in traditional Chinese medicine?

Context paragraphs:
Shi Jinmo: Shi Jinmo (Chinese: 施今墨; March 28, 1881 - August 22, 1969), former name Shi Yuqian (施毓黔), was a practitioner of traditional Chinese medicine.  His ancestral hometown was Kanshan Town, Xiaoshan, Zhejiang, and he was born in Guizhou Province.  He advocated the integration of traditional Chinese medicine into Western modern medicine.

Lixing Lao: Lixing Lao is a Chinese-American physiologist and acupuncturist.  He is known for his research on acupuncture and other forms of traditional Chinese medicine.  Since late 2013, he has been the director of the University of Hong Kong's School of Chinese Medicine, He has also held the Vivian Taam Wong Professorship in Integrative Medicine at the University of Hong Kong (HKU) since 2014.  He is also an adjunct professor of family and community medicine at the University of Maryland School of Medicine, where he also directs the Traditional Chinese Medicine Research Program in the Center for Integrative Medicine.

Yam (vegetable): Yam is the common name for some plant species in the genus "Dioscorea" (family Dioscoreaceae) that form edible tubers. Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in many temperate and subtropical world regions.  The tubers themselves are also called "yams", having numerous cultivars.

Beijing University of Chinese Medicine: Beijing University of Chinese Medicine (北京中医药大学) is a university in Beijing, China.  Founded in 1956 the Beijing University of Chinese Medicine is one of the earliest established traditional Chinese medical institutions for higher learning in the People Republic of China.  It is a traditional Chinese medical higher learning institution that has a place in the 211 Project for national development.  The former Beijing University of Chinese Medicine and the former Beijing College of Acupuncture, Orthopedics and Traumatology merged into the new Beijing University of Chinese Medicine on July 31, 2000, and became a priority university directly under the supervision of the Ministry of Education.

Traditional Vietnamese medicine: Traditional Vietnamese medicine (Y học Cổ truyền Việt Nam), also known as Southern Herbology (Thuốc Nam) is a traditional medicine practiced by Vietnamese people.  It is influenced by traditional Chinese medicine.  The other traditional medicine that is also practiced in Vietnam is traditional Chinese medicine (Trung Y), also known as Northern Herbology (Thuốc Bắc).  Thuốc Nam is one of two kinds of folk remedies known to villagers, the other being the traditional exercise dưỡng sinh.

Faculties of Medicines in Hong Kong: Before the handover of Hong Kong to the People's Republic of China in 1997, medical education in this former British colony traditionally and exclusively followed the path of western medicine.  Faculties of Medicine were modelled after those in the United Kingdom, and only doctors trained in western medicine were considered "formal" and "reliable."  Chinese medicine practitioners had no formal status at that time.  However, after the return of the territory to China, the practice of traditional Chinese medicine was further regulated and schools of Chinese Medicine were set up within some of the government funded tertiary institutions in Hong Kong.  The first school of its kind, the School of Chinese Medicine at Hong Kong Baptist University, was established in 1998.  Currently, there are two faculties with academic programmes in western medicine and three schools of Chinese Medicine in the city.

Pueraria: Pueraria is a genus of 15–20 species of plants native to Asia.  "Pueraria" flower is used in traditional Chinese medicine to reduce reactions to alcohol consumption, and is undergoing scientific study for that use.

Tetradium ruticarpum: Tetradium ruticarpum is a tree that comes from China and Korea.  It was previously classified in the genus "Euodia" as "Euodia ruticarpa".  The fruit is usually used, denoted sometimes as "fructus".  It has a strong bitter taste, and is used in traditional Chinese medicine (TCM) and is a recognized herb in Kampo.  Both the former genus name and the species name are often misspelled, and the plant usually appears in sources dealing with traditional Chinese medicine as ""Evodia(e) rutaecarpa"".

Shang Huo: Shang Huo is a Chinese folk term, known to medical professionals as "excessive internal heat".  It describes the heat within the body, "Shang Huo" could happen to anyone and it is significant to human health, since it may be likely to cause other serious diseases such as cold, fever and pneumonia.  "Shan Huo" can be treated through the eating and drinking food materials that produce a cooling effect. "Shang Huo" could be explained through the theory of traditional Chinese medicine (TCM), which belongs and categorizes it as a heat syndrome of TCM ("Traditional Chinese medicine," 2016).  Therefore, "Shang Huo" is mainly demonstrated by the emergence of specific symptoms, such as eye redness, pimples on the skin, yellow urine, toothache and sore throat (Cohen, n.d.).  Framed within these symptoms, it could be easier to understand that the terms explain a situation of internal body imbalances especially a compromise to the immune system ("Traditional Chinese medicine," 2016).  Traditionally, "Shang Huo" was believed to be more prevalent during hot, windy, cold and humid weather.

Nanjing University of Chinese Medicine: The Nanjing University of Chinese Medicine () is a university in Nanjing, capital of China's Jiangsu province.  It was established in 1954, making it the oldest and 1st rank in Traditional Chinese Medicine university in China dedicated to the study of traditional Chinese medicine.  The school offers 17 undergraduate majors, in addition to 29 masters and 22 doctoral degree programs.  It enrolls approximately 15,000 students, including a number of international students.

Supporting paragraphs: Yam (vegetable) Pueraria
Answer: Pueraria