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Chengmu (Red Tamarisk), its content is recorded under the section of Liuhua (Willow Flower).

Tong (Paulownia), grows in the valleys of Tongbai Mountain, and is now available everywhere. Its species include four types: Old annotations state: Qingtong (Green Paulownia), with both branches and leaves green and bearing no fruit; Wutong (Chinese Parasol Tree), with white bark, green leaves, and bearing fruit, the fruit being plump, delicious, and edible; Baitong (White Paulownia), bearing flowers and fruit, its flowers opening in February, yellowish-purple in color, also known as Yitong or Huangtong, which are the source of the flowers and leaves used in medicine; Gangtong, resembling Baitong but bearing no fruit, this is the type used for making qin and se instruments. Lu Ji's "Caomu Shu" states: Baitong is suitable for making qin and se. People in Yunnan weave it into cloth, similar to woolen cloth. Therefore, Gangtong and Baitong are suitable for making qin and se. It is also said: When Zi bears fruit and Tong has skin, it is called Yi; nowadays people call it Wutong. The "Erya" refers to it as Chen, and also as Rong. Thus, both Baitong and Wutong share the name Yi. Some say Wutong can indicate the intercalary months of the sun and moon calendar. It grows twelve leaves on one side, six on each side; counting from the bottom, one leaf represents one month, up to the twelfth leaf at the top. If there is an intercalary month, a thirteenth leaf appears, with minor remnants. Observing it reveals which month is intercalated. Hence it is said: If Wutong does not grow, the Nine Provinces differ. Some say that the tree currently used by people in the South for oil production is Gangtong; this Tong also bears fruit, slightly larger than Wutong seeds. In Jiangnan, there is [missing character] Tong, which blooms red flowers in autumn but bears no fruit. There is Zitong, with flowers like lilies, and fruits that can be boiled with sugar for consumption. In Lingnan, there is Citong (Coral Tree), with leaves like Wutong, flowers spreading sideways like a palm, branches and trunks with thorns, and deep red flowers. It is primarily effective for stopping bleeding from metal wounds. Additionally, the white bark of Wutong also treats hemorrhoids. The Shanfan Formula treats internal hemorrhoids generated in the intestines, with nodules around the anus, using it in the Zhuxuantí (Pig Suspended Hoof) and Qinglong Wusheng Gao (Blue Dragon Five Raw Ointment); the ointment is applied externally to sores and taken internally with wine.

Zibai pi (Bark of Catalpa), grows in the valleys of Henei, and is now common along nearby roads. The wood resembles Paulownia but has smaller leaves and purple flowers. The "Erya" states: Yi, Zi. Guo Pu's annotation says: It is Qiu (Goldenrain Tree). The "Shijing · Feng" states: Yi, Tong, Zi, Qi. Lu Ji says: Zi is the variety of Qiu with loose texture, white color, and bearing fruit, called Zi. When Zi bears fruit and Tong has skin, it is called Yi; they are largely similar with slight differences. Another type is Shuzi, also known as [missing character], belonging to the Qiu category. People in Jiangdong call it Huyi. The "Shijing · Xiaoya" states: There is [missing character] in the North Mountain. Lu Ji says: Its branches, leaves, and wood grain resemble Qiu, being a variant of Shanqiu (Wild Goldenrain). Nowadays people call it Kuqiu (Bitter Goldenrain). Shuli (Rhamnus) is also named Shuzi; some say it is this plant. However, the flowers and fruits of Shuli do not resemble them at all, suggesting it might be a different object with the same name. For medicinal use of Zi, the variety bearing fruit should be used as the guiding herb. Qiu and Zi are widely planted in palaces, temples, and private gardens. Cui Yuanliang's "Jiyan Fang": To treat toxic swelling, regardless of hardness or softness, take ten layers of Qiu leaves, apply thinly over the swelling, wrap with old silk, change three times daily; the toxic vapors should transform into water within the leaves. If dry leaves are taken in winter, soak them in salt water for a long time before use. Alternatively, take the root bark, chop finely, crush, and apply externally; all methods are effective. Also treats upper qi cough and abdominal fullness with emaciation. Take three dou of Qiu leaves, boil in three dou of water for thirty boils, remove dregs, decoct until pills the size of dates can be formed. Insert into the lower part using a bamboo tube for immediate cure. The "Qiezhong Fang": Decoct single-ingredient Qiu leaves as a miraculous formula for scrofula sores. Around the Autumn Equinox, at dawn, have someone hold a pouch, rotate and pick leaves from branches into the pouch. Take fifteen jin of stalks, one shi of water, decoct in a clean pot to obtain three dou; then transfer to another pot to decoct to seven or eight sheng; finally transfer to a third pot to decoct to two sheng, yielding the decoction. Store in a non-leaking vessel. For patients, first take half he of sesame oil, one fen of wax, and a piece of butter the size of a chestnut, melt together like facial cream. Then take seven almonds and a little ginger, grind finely, add two qian of rice flour, mix evenly into the ointment. Apply to the sore first; after two days, wipe off, then evenly spread the Qiu decoction over the sore with a comb, wrap with soft silk. Change every two days, wipe off, and apply new medicine. Within five or six applications, if a head forms, muscle regeneration and healing will occur. If not ulcerated, it will resolve internally. After recovery, observe dietary and lifestyle restrictions for half a year. During leaf harvesting and decoction preparation, forbid filial sons, women, monks, chickens, and dogs from witnessing it.