锋针即今三棱名，主刺瘤邪时气壅，发于经络痼不解，泻热出血荣卫通。
【注】四曰：锋针式图
[1]经之四曰：锋针者，取法于絮针，刃三隅，长一寸六分，
其上去八分，下留八分。
[2]刃三隅者，盖直壮而锐，可以泻热出血也。
[3]锋针即今三棱针，主刺时气温热瘤邪也。
[4]凡发于经络中壅痼不解之病，用三棱针之锋利，以泻热出血，
使经络开通，荣卫调和，而壅痼之疾愈矣。
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铍针之锋末如剑，主刺寒热两相搏，合而为痈脓已成，大脓一泻实时和。
【注】五曰：铍针式图
[1]经之五曰：铍针者，取法于剑锋者，广二分半，长四寸。
[2]其必广二分半长四寸如剑锋者，取其能开通也。
[3]铍针之锋如剑者，主刺寒热相搏，或邪气郁于荣卫，凝滞不通，
发为痈疽，其脓已成，用此开之，以取大脓。
[4]大脓泻则阴阳和，而痈热愈矣。
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员利形尖如氂，主治虚邪客于经，暴痹走注历节病，刺之经络实时痛。
【注】六曰：员利针式图
[1]经之六曰：员利针者，取法于氂针，微大其末，反小其身，
长一寸六分。
[2]其取法于氂者，以毛之强者曰氂，用其细健可稍深也。
[3]员利针，尖其形如氂，员而且锐，
主治虚邪客于经络而为暴痹与走注历节疼痛等病。
[4]以此刺之则经络流通，而虚邪自去矣。
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锋针就是现在的三棱针，主要用来刺治瘤邪和时气壅滞的病证。如果病邪发于经络中，顽固难解，用锋针泻热出血，可使营卫通畅。
【注】第四条：锋针样式图
[1]《内经》第四条说：锋针，取法于絮针，刀刃有三个角（三面），长一寸六分，
上面距离尖端八分，下面留八分不磨尖。
[2]所谓“刃三隅”，是指刀刃直而壮实且锐利，可以用来泻热出血。
[3]锋针即现在的三棱针，主要刺治时气温热、瘤邪等病。
[4]凡是发于经络中壅滞顽固难解的病证，用三棱针的锋利，来泻热出血，
使经络开通，营卫调和，那么壅滞顽固的疾病就能痊愈了。
铍针的针尖像剑一样，主要刺治寒热相互搏结，合而为痈脓已经形成的病证，放出大量脓液后，阴阳实时调和。
【注】第五条：铍针样式图
[1]《内经》第五条说：铍针，取法于剑锋，宽二分半，长四寸。
[2]它必须宽二分半、长四寸像剑锋一样，是取其能够开通的作用。
[3]铍针的针尖像剑，主要刺治寒热相搏，或者邪气郁结于营卫，凝滞不通，
发为痈疽，脓液已经形成，用此针切开，以排出大量脓液。
[4]大量脓液排出则阴阳调和，痈热也就痊愈了。
员利针形状尖锐如牦牛尾毛，主治虚邪客居在经络，导致暴发性痹症、走注痛和历节病，针刺之后经络即时疼痛缓解（或指经络即时通畅）。
【注】第六条：员利针样式图
[1]《内经》第六条说：员利针，取法于氂针，末端稍大，身部稍细，
长一寸六分。
[2]它取法于氂，因为毛之强者称为氂，利用其细健的特点可以稍微深刺。
[3]员利针，尖端形状像氂，圆而且锐利，
主治虚邪客于经络而导致的暴痹、走注、历节疼痛等疾病。
[4]用此针刺治，则经络流通，虚邪自然去除。
Fengzhen (Sharp Needle) is the modern three-edged needle, primarily used to puncture and treat neoplastic pathogens (tumors/pathological masses) and stagnation caused by seasonal epidemic qi. When pathogens manifest in the meridians and are stubborn and difficult to resolve, using Fengzhen to drain heat and bleed allows Ying (Nutritive Qi) and Wei (Defensive Qi) to flow freely.
[Note] Item 4: Diagram of the Fengzhen
[1] The Classic states: The Fengzhen is modeled after the cotton-picking needle, with a blade having three edges (triangular cross-section), one cun six fen in length.
The upper part extends eight fen from the tip, leaving the lower eight fen unsharpened.
[2] "Three edges" implies the blade is straight, robust, and sharp, suitable for draining heat and bleeding.
[3] Fengzhen corresponds to the modern three-edged needle, mainly used for puncturing conditions such as seasonal warm-heat pathogens and neoplastic pathogens.
[4] For any disease characterized by stagnation and stubbornness within the meridians, the sharpness of the three-edged needle is used to drain heat and bleed,
thereby opening the meridians, harmonizing Ying and Wei, and curing the stagnant and stubborn ailments.
The tip of the Pizhen (Broadsword Needle) resembles a sword, primarily used to puncture conditions where cold and heat struggle against each other, combining to form abscesses with pus already established; draining large amounts of pus restores harmony immediately.
[Note] Item 5: Diagram of the Pizhen
[1] The Classic states: The Pizhen is modeled after the edge of a sword, two-and-a-half fen wide, four cun long.
[2] Its dimensions of two-and-a-half fen wide and four cun long, resembling a sword's edge, are designed to facilitate opening and draining.
[3] The tip of the Pizhen being sword-like is primarily used to puncture conditions where cold and heat contend, or where pathogens stagnate in Ying and Wei, causing obstruction,
leading to carbuncles and sores with established pus; this needle is used to incise and extract large amounts of pus.
[4] Draining large amounts of pus harmonizes Yin and Yang, thereby curing the carbuncle and heat.
Yuanli Zhen (Round-Sharp Needle) is shaped sharply like yak hair, primarily treating deficiency pathogens lodging in the meridians, causing sudden bi-syndrome, wandering pain, and joint pain; upon needling, the meridians become patent and pain resolves instantly.
[Note] Item 6: Diagram of the Yuanli Zhen
[1] The Classic states: The Yuanli Zhen is modeled after the Mao needle, slightly larger at the tip and narrower in the body,
one cun six fen in length.
[2] It is modeled after Mao (yak hair); since strong hair is called Mao, its fine and sturdy nature allows for deeper insertion.
[3] The Yuanli Zhen has a sharp, round, and pointed tip resembling Mao,
primarily treating sudden bi-syndrome, wandering pain, and joint pain caused by deficiency pathogens lodging in the meridians.
[4] Needling with this instrument promotes the free flow of the meridians, causing deficiency pathogens to depart naturally.