小儿三岁以下有病，须看男左女右手。虎口三关从第二指侧向内推看，第一节名风关，
第二节名气关，第三节名命关。辨其纹色，紫者属热，红者属寒，青者惊风，白者疳病，黑者中
恶，黄者脾之困也。若现于风关为轻，气关为重，过于命关，则难治矣。
察见形色先分部位，左颊青龙属肝，右颊白虎属肺，天庭高而离阳心火，地角低而坎阴
肾水。鼻在面中，脾应唇际。红色见而热痰壅盛，青色露而肝风怔忡。如煤之黑，为痛中恶
逆传；似橘之黄，食伤脾虚吐利。白乃疳痨，紫为热炽。青遮日角难医，黑掩太阳不治。年
寿赤光，多生脓血。山根青黑，每多灾异。朱雀贯于双瞳，火入水乡；青龙达于四白，肝乘
肺位。泻痢而戴阳须防，咳嗽而拖蓝可忌。疼痛万殷，面青而唇口嘬；肝风欲发，面赤而目
直视。火光焰焰，外感风寒；金气浮浮，中藏积滞。乍黄乍白，疳积连绵；又赤又青，风邪
螈。气之囟门成坑，血衰头毛作穗。肝气眼生眵泪，脾冷流涎滞颐。面目虚浮，定腹胀
而上喘；眉毛频蹙，必腹痛而多啼。左右两颊似青黛，知为客忤；风气二池如黄土，无乃伤脾
。风门黑主疝，青为风；方广光滑吉，昏暗危。手如数物兮，肝风将发；面若涂朱兮，心火
燃眉。坐卧爱暖，风寒之入；伸缩就冷，烦躁何疑。肚大脚小，脾欲困而成疳；目瞪口张，
势似危而必毙。噫!五体以头为尊，一面惟神可恃。况声之轻重不同，啼之干湿顿异。呵欠
连绵，知病之欲作，忽然惊叫，识火之将炜。此察证之规绳，幸拳拳而不悖。
小儿三岁以下的患儿若患病，必须观察其左手（男孩）或右手（女孩）。从食指侧面由外向内推看虎口部位的脉络，显现出三关：第一节称为风关，第二节称为气关，第三节称为命关。辨别其纹路的颜色：紫色属于热证，红色属于寒证，青色主惊风，白色主疳病，黑色主中恶，黄色主脾虚困顿。如果纹路只现于风关，病情较轻；现于气关，病情较重；若延伸至命关甚至越过命关，则难以治疗。
观察面色和形态首先要区分部位：左颊对应青龙，归属于肝；右颊对应白虎，归属于肺；天庭高耸属离卦阳火，对应心火；地角低陷属坎卦阴水，对应肾水。鼻子位于面部中央，脾脏反映在嘴唇周围。出现红色表示热痰壅盛；出现青色表示肝风内动、心悸怔忡。颜色黑如煤炭，是疼痛且中恶邪气逆传的表现；黄如橘子皮，是饮食损伤、脾虚导致的呕吐腹泻。白色主疳积劳损，紫色主热势炽盛。青色遮盖日角（额角）者难治，黑色掩盖太阳穴者不治。年寿（鼻准下方）发红光亮，多生脓血之症。山根（两眼之间鼻梁根部）青黑，常预示灾异疾病。朱雀色贯入双瞳，是火入水乡（心火亢盛）；青龙色达于四白（眼下），是肝木乘侮肺金。患泻痢而见戴阳证（面赤如妆）须防脱证，咳嗽而面色发蓝者预后不良。疼痛剧烈时，面色青紫且嘴唇收缩；肝风欲发作时，面色红赤且眼睛直视不动。面色火光焰焰，多为外感风寒；面色金气浮泛，体内多有积滞。面色乍黄乍白，是疳积连绵不断；又赤又青，是风邪引起的抽搐。气虚则囟门凹陷成坑，血衰则头发枯槁如穗。肝气有余则眼生眵泪，脾冷则流涎且滞留于颐部。面目虚浮，定有腹胀并向上喘息；眉毛频繁皱起，必定腹痛且多啼哭。左右两颊似青黛色，可知为客忤邪气所致；风气二池（眼角外侧）如黄土色，可能是伤脾所致。风门（目内眦上方）黑色主疝气，青色主风邪；方广（指特定部位形状）光滑为吉，昏暗为危。手指动作如数物状，是肝风即将发作；面色红润如涂朱砂，是心火燃眉之急。坐卧喜欢温暖，是风寒侵入；伸缩身体趋向凉爽，则是烦躁不安无疑。肚子大脚小，是脾虚欲困顿而成疳病；眼睛瞪大嘴巴张开，形势危急必将死亡。唉！五体中以头部为尊，一面之中唯有神色可依赖。况且声音的轻重不同，啼哭的干湿也顿时各异。呵欠连绵，知道病症将要发作；忽然惊叫，识别出火邪将旺。这是察证的规范准则，希望医者能诚恳遵循而不违背。
In children under three years of age who are ill, one must examine the left hand for boys and the right hand for girls. The Three Passes (San Guan) at the Tiger's Mouth (Hu Kou) are observed by pushing from the lateral side of the second finger inward. The first segment is named the Wind Pass (Feng Guan), the second segment the Qi Pass (Qi Guan), and the third segment the Life Pass (Ming Guan). By distinguishing the color of the veins: purple indicates Heat (Re); red indicates Cold (Han); green/blue indicates Convulsive Disease (Jing Feng); white indicates Infantile Malnutrition (Gan Bing); black indicates Evil Invasion (Zhong E); yellow indicates Spleen Deficiency and Fatigue (Pi Zhi Kun). If the vein appears only in the Wind Pass, the condition is mild; in the Qi Pass, it is severe; if it extends beyond the Life Pass, it is difficult to treat.
When observing facial features and colors, one must first distinguish the locations: the left cheek corresponds to the Azure Dragon (Qing Long) and belongs to the Liver (Gan); the right cheek corresponds to the White Tiger (Bai Hu) and belongs to the Lung (Fei); the high forehead (Tian Ting) corresponds to the Li Trigram Yang Fire, relating to Heart Fire (Xin Huo); the low chin corners (Di Jiao) correspond to the Kan Trigram Yin Water, relating to Kidney Water (Shen Shui). The nose is in the center of the face, and the Spleen (Pi) reflects on the lips. The appearance of red indicates Phlegm-Heat obstruction (Re Tan Yong Sheng); the appearance of green/blue indicates Liver Wind stirring with palpitations (Gan Feng Zheng Chong). Black like coal signifies pain and evil invasion with counter-flow transmission (Tong Zhong E Ni Chuan); yellow like an orange peel signifies food injury and Spleen deficiency with vomiting and diarrhea (Shi Shang Pi Xu Tu Li). White indicates Gan consumption (Gan Lao); purple indicates blazing Heat (Re Chi). Green covering the Sun Angle (Ri Jiao) is hard to cure; black covering the Taiyang point is untreatable. Red luster at the Nian Shou (area below the nose tip) often generates pus and blood. Blue-black at the Shan Gen (root of the nose between eyes) often portends disaster or abnormal disease. Zhuque (Vermilion Bird) color penetrating both pupils indicates Fire entering the Water region (Huo Ru Shui Xiang); Qinglong (Azure Dragon) color reaching the Si Bai area indicates Liver overacting on the Lung position (Gan Cheng Fei Wei). In cases of dysentery with Dai Yang syndrome (floating Yang/false heat), one must guard against collapse; in coughs with a blue tint, prognosis is poor. Severe pain presents with a cyanotic face and puckered lips/mouth; impending Liver Wind presents with a red face and fixed gaze. A fiery red complexion suggests external contraction of Wind-Cold (Wai Gan Feng Han); a floating metallic complexion suggests internal accumulation and stagnation (Zhong Cang Ji Zhi). Fluctuating yellow and white complexions indicate continuous Gan accumulation (Gan Ji Lian Mian); mixed red and green indicate wind pathogen causing convulsions (Feng Xie Rong). Qi deficiency causes the fontanelle to sink into a pit; Blood deficiency causes hair to become brittle and tufted. Excess Liver Qi causes eye discharge and tearing; Spleen cold causes drooling and retention at the chin (Liu Xian Zhi Yi). Puffy face and eyes indicate abdominal distension with upward panting; frequent frowning indicates abdominal pain and excessive crying. Cyan-like cheeks on both sides suggest Guest Wu (Ke Wu) pathogenic influence; earthy-yellow color in the two wind pools (outer canthi) suggests Spleen injury. Black at the Wind Gate (Feng Men) indicates Hernia (Shan); green indicates Wind pathogen (Feng). Smooth and broad shapes are auspicious; dim and obscure shapes are critical. Fingers moving as if counting objects indicates impending Liver Wind; a face reddened like vermilion indicates Heart Fire burning at the eyebrows (Xin Huo Ran Mei). Preference for sitting/lying in warmth indicates Wind-Cold invasion; seeking coolness through movement indicates restlessness without doubt. A large belly with small legs indicates Spleen deficiency leading to Gan malnutrition; staring eyes with open mouth indicates a critical state likely leading to death. Alas! Among the five body parts, the head is supreme; among the face, only the Spirit (Shen) can be relied upon. Furthermore, the pitch of voice differs, and the wetness/dryness of crying varies distinctly. Continuous yawning indicates the onset of illness; sudden startled cries identify the flourishing of Fire pathogen. These are the standards for syndrome differentiation; may practitioners earnestly follow them without deviation.