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。然予尝用万全膏遍覆肿处，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 痛，为至妙也。若有脓管，以棉纸捻裹药纳入，频换数条，即化去耳。亦有顽
硬之极，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，更甚于日前。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，使用膏药贴在疮顶，用药敷在四周进行围堵。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促使排脓，敷药的地方是为了促使消散。同时能箍住疮的根部，不让其扩散。这种分三层敷围的方法：第一层用乌金膏贴在疮头。如果是漫肿没有明显脓头的，用湿纸片粘贴，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。然而我曾尝试用万全膏完全覆盖肿胀处，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，最终取得了圆满的效果。可见膏药的奥妙之处。
凡是治疗痈疽，如果疮口小但脓液多，则脓液排不出，或者排不干净；或者稀薄的脓液可以排出，坚硬的脓液难以排出，导致瘀滞不去而新肉不生，病情拖延难以痊愈。治疗方法应当将疮口烂开变大，使瘀血和脓液全部排出为好。这种腐蚀去腐的药物，乌金散效果最佳。它能祛除腐败肌肉而不损伤新生肌肉，而且疼痛不明显，是非常精妙的药物。如果有脓管，可以用棉纸捻裹着药物纳入管内，频繁更换几条，就能将其化解去除。也有极其顽固坚硬的腐肉，不是乌金散所能去除的，那就使用化腐紫霞膏涂抹。但最终都不如乌金散稳妥。
凡是治疗痈疽最难收口的情况，是由于腐败肌肉夹杂、瘀积脓液未排尽所致。庸医不认识这一点，胡乱使用补益收敛的药物，勉强让伤口闭合，恐怕日后体内毒素复发，比之前更严重。只有我所使用的海浮散堪称至宝。将此药粉敷在患处，腐败肌肉自然脱落，不必用刀切割。新生肌肉自然生长，又不藏留毒素，每次使用都非常恰当。一般的大法是先使用防风汤清洗患处，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，就是这个道理。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。
Ancient texts state that one should apply a plaster to the top of the lesion and apply medication around the four sides for enclosure. 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 apply Wanquan Gao (Perfect Safety Plaster) over it, and surround the area with Furong Gao (Hibiscus Plaster). The area covered by the plaster is intended to promote pus discharge, while the area covered by the medicated powder is intended to promote resolution. This method can also bind the root of the swelling, preventing it from spreading. This three-layer application method consists of: the first layer applying Wujin Gao to the head of the sore. If there is diffuse swelling without a distinct head, paste a wet paper sheet on it; the place where the paper dries first indicates the location of the sore's head. The second layer applies Wanquan Gao. The third layer surrounds the area with Furong Gao. However, I have occasionally used Wanquan Gao to completely cover the swollen area, binding the root together as well. The parts that were meant to resolve naturally resolved, and the parts meant to ulcerate naturally ulcerated, ultimately achieving complete success. This demonstrates the efficacy of plasters.
In treating carbuncles and furuncles, if the opening is small but the pus is abundant, the pus may not drain or may not drain completely. Thin pus may drain easily, while thick/hard pus is difficult to expel, leading to stasis remaining and new tissue failing to grow, resulting in prolonged and difficult healing. The treatment method should be to cauterize and enlarge the opening, allowing all stasis and pus to exit, which is optimal. Among cauterizing medications, Wu Jin San (Black Gold Powder) is the best. It removes necrotic flesh without damaging new tissue and causes little pain, making it extremely effective. If there is a sinus tract, wrap the medication in cotton paper twists and insert them into the tract, changing several pieces frequently until the necrosis dissolves. In cases of extreme hardness where Wu Jin San cannot remove the necrosis, Huafu Zixia Gao (Corrosion-Removing Purple Cloud Plaster) should be applied. Nevertheless, nothing is as stable and reliable as Wu Jin San.
The most difficult aspect of treating carbuncles and furuncles is closing the wound, which is caused by mixed necrotic flesh and incomplete drainage of stagnant pus. Unskilled practitioners fail to recognize this and recklessly use astringent and tonifying agents to force closure, fearing that internal toxins may relapse later, potentially worse than before. Only Haifu San (Sea Float Powder), which I use, can be considered a supreme treasure. Applying this powder causes necrotic flesh to detach naturally, eliminating the need for surgical excision. New flesh grows naturally without harboring toxins, ensuring every application is appropriate. The general protocol is to first wash the area with Fangfeng Tang (Saposhnikovia Decoction), then apply the powdered medicine. During washing, avoiding wind exposure is paramount. Ancient texts state that frequent washing with decoctions must strictly avoid wind drafts, which aligns with this principle. For patients with weak constitutions who cannot close wounds, internal administration of tonifying medicines is required to assist the process.