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Produced in Linyi, the tree resembles *Firmiana simplex* (Wutong), with white bark and leaves similar to those of *Pteroceltis tatarinowii* (Qingtong). The fruit is like a chestnut, plump, sweet, and edible. *Nanfang Caomu Zhuang* states: Zhancheng is Linyi, which produces Haiwuzi, identical to Chinese pine nuts, but the fruits are larger and plumper, shaped like small chestnuts, triangular, rich and sweet, an excellent fruit for banquets.
Taste is neutral, non-toxic; benefits the large and small intestines, enhances wisdom, opens the chest and mind, and clarifies the ears and eyes.
For palpitations below the heart, frequent nightmares, and forgetfulness, eat about ten Haiwuzi daily on an empty stomach; recovery occurs naturally after more than a month.
For hernia causing scrotal swelling as large as a dou, burn seven Haiwuzi to ash and ingest; cure is immediate.

Produced in Guangxi, the skin color and shape resemble large loquats, with sweet flesh, ripening in autumn and winter. Taste is sweet, nature is neutral; treats vomiting, inability to eat, Guan-Ge syndrome (obstruction preventing upper and lower communication), spleen deficiency with sinking, and rectal prolapse; clears heat, cools the large intestine, removes stagnant blood, benefits the hundred vessels, regulates the water organs (kidneys and bladder), stops thirst and generates fluids, resolves summerheat, dissipates alcohol toxicity, benefits the ears and eyes, and treats cough with rebellious qi.

*Guiyang Yu Heng Zhi* records: Produced in Guangxi, size comparable to a half-sheng bowl, dozens of segments clustered into a ball, each segment having a seam, green in winter, turning red when ripe in summer. Taste is sweet; tonifies the spleen and stomach, consolidates primordial qi, restrains hyperactive yang, supports weak earth (spleen), strengthens spirit, nourishes blood, relieves distension and resolves phlegm, detoxifies alcohol, stops post-drinking thirst, benefits the head and eyes, opens the mind, and enhances willpower.
For female infertility, soak Luguzi in fine wine for three days, drink daily; pregnancy may occur within one hundred days. For eye nebulae causing gradual dimness and blurred vision, soak Luguzi in white honey, consume one piece with honey daily; resolution occurs within one month.

Produced in Jiuzhen and Jiaozhi, the fruit resembles a peach, over one cun long, flowers in February, bearing fruit simultaneously, ripens in May, yellow in color. Salt-preserved and eaten, taste is sour like plum, nature is cool and neutral; clears the heart and moistens the lungs, stops thirst and generates fluids, restrains extreme hyperactive yang, eliminates inflammatory steaming summerheat, and descends excess fire of the Sanjiao. Treats epistaxis and bleeding from receding gums due to periodontal disease; use the pit with kernel, charred to retain its properties, mixed with water, held in the mouth and swallowed to stop bleeding immediately.