书云∶用膏贴顶上，敷药四边围。凡肿毒之大者，将以成脓，用乌金膏贴疮头上，然后
用万全膏贴之，四旁用芙蓉膏敷之。贴膏处取其出脓，敷药处取其消散，并能箍住根脚，不
令展开。其作三层敷围法，第一层，用乌金膏贴疮头，若漫肿无头，以湿纸粘贴，先干处，
是疮头也。第二层，万全膏贴之。第三层，芙蓉膏围之。然予尝用万全膏，遍敷肿处，连根
脚一齐箍住。其中消处自消，溃处自溃，竟收全功。可见膏药之妙矣。
凡治痈疽，口小脓多，则脓不出，或出而不尽，或薄脓可出，硬脓难出，以致瘀不去而
新不生，延绵难愈。法当烂开大口，俾瘀脓尽出为善。其烂药，乌金散最佳，祛瘀肉，不伤
新肉，且不甚掀痛，为至妙也。若有脓管，以棉纸拈裹药纳入，频换数条，即化去耳。亦有
顽梗之极，非乌金散所能去者，则用化腐紫霞膏搽之，然终不若乌金散为至稳。
凡治痈疽最难收口者，由瘀肉夹杂，瘀脓不尽所致。庸工不识，妄用补涩之剂，勉强收
口，恐他日内毒复发，更甚于目前。惟予所用海浮散堪称至宝。以此敷上，瘀肉自脱，不必
用刀，新肉自生，又不藏毒，万举万当也。大法先用防风汤洗之。再上末药。洗时须避风为
主。书云∶频将汤洗，切忌风吹是已。更有体虚不能收口者，须内服补药以助之。
古籍记载：将膏药贴在疮顶，药物敷在四周。凡是较大的肿毒，即将化脓时，先用乌金膏贴在疮头上，然后再用万全膏贴在上面，四周用芙蓉膏敷上。贴膏药的地方是为了引出脓液，敷药物的地方是为了使肿势消散，并且能够箍住疮的根部，不让其扩散蔓延。这种分三层敷围的方法，第一层，用乌金膏贴在疮头；如果漫肿没有明显的疮头，就用湿纸粘贴，先干燥的地方就是疮头所在。第二层，用万全膏贴在上面。第三层，用芙蓉膏围绕敷贴。然而我曾经使用万全膏，遍敷整个肿胀处，连同根部一起箍住。其中该消散的自然消散，该溃破的自然溃破，最终完全治愈。可见膏药的妙用啊。
凡是治疗痈疽，如果疮口小但脓多，那么脓液排不出来，或者排不干净；或者稀薄的脓容易排出，坚硬的脓难以排出，导致瘀滞不去而新肉不生，病程拖延难以愈合。治疗方法应当烂开较大的疮口，让瘀血和脓液全部排出才好。那种腐蚀去腐的药物，乌金散最好，能祛除瘀肉而不损伤新肉，而且疼痛不明显，是最为奇妙的。如果有脓管，用棉纸捻成条包裹药物纳入其中，频繁更换几条，就能将其化解去除。也有极其顽固僵硬的腐肉，不是乌金散所能去除的，则使用化腐紫霞膏涂抹，然而终究不如乌金散稳妥。
凡是治疗痈疽最难收口的情况，是由于瘀肉夹杂、瘀脓未尽所致。庸医不认识这一点，胡乱使用补益收敛的药物，勉强闭合疮口，恐怕日后体内毒素复发，比现在更严重。只有我所用的海浮散堪称至宝。将此药粉敷在上面，瘀肉自然脱落，不必用刀割，新肉自然生长，又不藏留毒素，每次使用都非常恰当。大法则是先用防风汤清洗患处，然后再撒上药末。清洗时必须以避风为主。古籍说：频繁用汤药清洗，切忌风吹，就是这个意思。更有身体虚弱不能收口的患者，必须内服补益药物来辅助治疗。
According to ancient texts: Apply a plaster to the top of the lesion and spread medicine around the four sides. For large swellings and toxic sores that are about to suppurate, first apply Wujin Gao (Black Gold Plaster) to the head of the sore, then cover it with Wanquan Gao (Perfect Safety Plaster), and surround it with Furong Gao (Hibiscus Plaster). The area covered by the plaster is intended to promote pus discharge, while the area covered by the medicine is intended to resolve the swelling. This method can also "hoop" or confine the base of the sore, preventing it from spreading. Regarding this three-layer application method: the first layer involves applying Wujin Gao to the head of the sore; if there is diffuse swelling without a distinct head, paste wet paper onto the area—the part that dries first indicates the location of the sore's head. The second layer involves applying Wanquan Gao. The third layer involves surrounding the area with Furong Gao. However, I have often used Wanquan Gao, spreading it over the entire swollen area, thereby confining both the swelling and its base. The parts that should resolve naturally resolve, and the parts that should ulcerate naturally ulcerate, ultimately achieving complete healing. This demonstrates the efficacy of plasters.
In treating carbuncles and ulcers, if the opening is small but there is abundant pus, the pus may not drain, or may not drain completely; thin pus may drain easily, while thick/hard pus is difficult to expel. This leads to stasis remaining while new tissue fails to grow, resulting in a lingering condition that is difficult to heal. The treatment method should be to cauterize/open a larger aperture to ensure the complete expulsion of necrotic tissue and pus. Among cauterizing/removing necrotic agents, Wu Jin San (Black Gold Powder) is the best; it removes necrotic flesh without damaging healthy new tissue and causes minimal pain, making it extremely effective. If a sinus tract exists, wrap the medicine in cotton paper strips, insert them into the tract, and replace them frequently until the obstruction dissolves. In cases of extremely stubborn induration that cannot be removed by Wu Jin San alone, Huafu Zixia Gao (Corrosive Purple Cloud Plaster) may be applied for sloughing, although it is not as safe and stable as Wu Jin San.
The most difficult aspect of treating carbuncles and ulcers regarding wound closure is caused by the intermingling of necrotic tissue and incomplete drainage of purulent exudate. Unskilled practitioners fail to recognize this and recklessly use astringent and tonifying formulas to force wound closure, fearing that internal toxins may recur later, potentially worse than the current state. Only the Haifu San (Sea Float Powder) used by me can be considered a supreme treasure. When applied, necrotic tissue naturally detaches without the need for surgical knife excision, new tissue grows spontaneously, and toxins are not retained, making every application highly successful. The general principle is to first wash the area with Fangfeng Tang (Saposhnikovia Decoction), and then apply the powdered medicine. During washing, avoiding wind exposure is paramount. Ancient texts state: "Frequently wash with decoction, strictly avoid wind exposure," which confirms this approach. For patients with weak constitution who cannot achieve wound closure, internal administration of tonifying medicines is required to assist the process.