妇人有少腹之间，自觉有紧迫之状，急而不舒，不能生育。此人人之所不识也，谁知是带脉之拘急乎！夫带脉
系于腰脐之间，宜弛而不宜急。今带脉之急者，由于腰脐之气不利也。而腰脐之气不利者，由于脾胃之气不足也。
脾胃气虚，则腰脐之气闭；腰脐之气闭，则带脉拘急，遂致牵动胞胎。精即直射于胞胎，胞胎亦暂能茹纳，而力难
负载，必不能免小产之虞。况人多不能节欲，安得保其不坠乎？此带脉之急，所以不能生子也。治法宜宽其带脉之
急，而带脉之急，不能遽宽也，宜利其腰脐之气。而腰脐之气，不能遽利也，必须大补其脾胃之气与血，而腰脐可
利，带脉可宽，自不难于孕育矣。
方用宽带汤。
白术（一两，土炒） 巴戟肉（五钱，酒浸） 补骨脂（一钱，盐水炒） 人参（三钱） 麦冬（三钱，去心） 杜
仲（三钱，炒黑） 大熟地（五钱，九蒸） 肉苁蓉（三钱，洗净） 白芍（三钱，酒炒） 当归（一钱，酒洗） 五
味（三分，炒） 建莲子（二十粒，不去心）
水煎服。四剂少腹无紧迫之状，服一月即受胎。此方之妙，脾胃两补，而又利其腰脐之气，自然带脉宽舒，可
以载物而胜任矣。或疑方中用五味、白芍之酸收，不增带脉之急，而反得带脉之宽，殊不可解。岂知带脉之急，由
于气血之虚。盖血虚，则缩而不伸；气虚，则挛而不达。用芍药之酸以平肝木，则肝不克脾。用五味之酸以生肾水，
则肾能益带，似相碍而实相济也，何疑之有？
眉批∶凡种子治法，不出带脉、胞胎二经，数言已泄造化之秘矣。
歌括∶少腹急迫不育雏，腰脐气闭带脉束。
脾胃气虚原致此，大补脾土功效殊。
宽带巴戟熟地术，麦参杜仲补骨脂。
苁蓉归芍莲五味，四剂少腹紧迫除。
Women may experience a sensation of tightness and urgency in the lower abdomen, feeling constrained and uncomfortable, which leads to infertility. This is something most people do not understand; who would suspect that it is due to the contraction and tension of the Dai Mai (Girdle Vessel)? The Dai Mai is connected between the waist and the umbilicus; it should be relaxed rather than tense. The current tension of the Dai Mai is caused by the obstruction of Qi flow in the waist and umbilical region. The obstruction of Qi in the waist and umbilical region, in turn, is due to insufficiency of Spleen and Stomach Qi.
When Spleen and Stomach Qi are deficient, Qi closure occurs in the waist and umbilical region; when Qi is closed there, the Dai Mai becomes contracted and tense, thereby pulling on the Bao Luo (Uterus). Even if semen is directly deposited into the uterus, the uterus may temporarily accommodate it, but it lacks the strength to sustain it, inevitably leading to the risk of miscarriage. Moreover, since many people fail to regulate their sexual desires, how can they ensure the fetus does not fall? This is why the tension of the Dai Mai prevents conception. The treatment method should aim to relax the tension of the Dai Mai. However, this tension cannot be relieved immediately; one must first promote the free flow of Qi in the waist and umbilical region. Since Qi flow there cannot be immediately unblocked, it is necessary to greatly tonify the Qi and Blood of the Spleen and Stomach. Once the waist and umbilical region is unblocked and the Dai Mai is relaxed, conception will naturally become easy.
The formula used is Kuan Dai Tang (Broaden the Girdle Decoction).
Bai Zhu (Atractylodis Macrocephalae Rhizoma, 1 liang, stir-fried with soil)
Ba Ji Rou (Morindae Officinalis Radix, 5 qian, soaked in wine)
Bu Gu Zhi (Psoraleae Fructus, 1 qian, stir-fried with salt water)
Ren Shen (Ginseng Radix et Rhizoma, 3 qian)
Mai Dong (Ophiopogonis Radix, 3 qian, heart removed)
Du Zhong (Eucommiae Cortex, 3 qian, stir-fried until black)
Shu Di Huang (Rehmanniae Radix Praeparata, 5 qian, steamed nine times)
Rou Cong Rong (Cistanches Herba, 3 qian, washed clean)
Bai Shao (Paeoniae Radix Alba, 3 qian, stir-fried with wine)
Dang Gui (Angelicae Sinensis Radix, 1 qian, washed with wine)
Wu Wei Zi (Schisandrae Chinensis Fructus, 3 fen, stir-fried)
Jian Lian Zi (Nelumbinis Semen, 20 grains, heart not removed)
Decoct with water and take orally. After four doses, the sensation of tightness in the lower abdomen disappears; after one month of taking the decoction, pregnancy is achieved. The brilliance of this formula lies in its dual tonification of the Spleen and Stomach, while simultaneously promoting Qi flow in the waist and umbilical region. Naturally, the Dai Mai becomes wide and comfortable, capable of bearing and sustaining the fetus. Some may doubt that the use of the sour and astringent properties of Wu Wei Zi and Bai Shao in the formula would not increase the tension of the Dai Mai, yet instead result in its relaxation, which seems incomprehensible. How could one know that the tension of the Dai Mai stems from Qi and Blood deficiency? When Blood is deficient, tendons contract and fail to extend; when Qi is deficient, tendons spasm and fail to reach. Using the sour flavor of Bai Shao to pacify Liver Wood ensures that Liver does not overact upon Spleen Earth. Using the sour flavor of Wu Wei Zi to generate Kidney Water ensures that Kidney nourishes the Dai Mai. Though seemingly obstructive, they actually assist each other; what is there to doubt?
Commentary: All methods for treating infertility revolve around the Dai Mai and the Bao Luo; these few words have revealed the secrets of creation.
Verse:
Lower abdominal urgency prevents conception,
Waist and umbilical Qi blockage binds the Dai Mai.
Spleen and Stomach Qi deficiency causes this condition,
Greatly tonifying Spleen Earth yields remarkable effects.
Kuan Dai contains Ba Ji, Shu Di, and Bai Zhu,
Along with Mai Dong, Ren Shen, Du Zhong, and Bu Gu Zhi.
Rou Cong Rong, Dang Gui, Bai Shao, Lotus Seeds, and Wu Wei Zi,
Four doses remove the lower abdominal urgency.