若要知四时伤寒病传证候，须将人之相属加左右间气之上，司地在阳，乃加左间气，在阴，
乃加右间气，数至司天气上，见何脏腑，先受病也。假令庚申人己卯日得病者，以手阳明司天，
前三辰壬午，手少阴心，阴，为在泉，手为阳支，手太阴为左间气，乃在左间气上将午加至卯上，
见寅，为三焦也。第一日，三焦受病，为主。第二日丑，太阴脾土，三焦火，火生土，为微邪，
当先补心泻脾。第三日传至子，足少阴属火，三焦亦是火，当解心经。第四日传至亥，足厥阴肝
属木，三焦是火，为木生火，为虚邪，当补肝泻心则愈。第五日传至戌，为足太阳膀胱，属水，
三焦是火，水克火，为客胜主，其人必死也。兼日辰癸未，癸，肾水也。（其法二也，一法用人
命者，一法用日辰也。一法用日辰加左右间气，又一法加左右间气于相属者，皆至日辰。医者详
推，有验准也。）假令甲子人戊午日病，少阴司天，前三辰癸酉，足阳明为在泉，酉阴交少阳，
右间气，将甲子加申，数至午上，见戌，为膀胱。第一日为主病。第二日传至酉，足阳明胃，胃
属土，膀胱是水，为土克水，为客胜主，为贼邪，必死也。太一其日得病，十死一生也。第二日，
胃受病日辰，己未日土运，土气也。三土当克一水，其人未时而亡，为四土临深也。假令壬申人
己丑日得病，手太阴为司天，前三辰太阳，手太阳司地，辰为阳支，合加手厥阴，为左间气。将
壬申数至司天，上见辰，为手太阳火。第一日，小肠受病，为主。第二日，传至于卯，手阳明大
肠属金，小肠属火，火克金，主胜客，为微邪，宜泻肺补小肠而愈也。假令丙寅人丙戌
日病，此日丙辛水运，辰戌太阳，为水气，天符日，其病难痊。当是足太阳司天，前三辰司地，
辛丑足太阴司地，乃丑为阴支，子为右间气。将丙寅加右间气，数至司天，上见子，为手少阴，
是第一日受病也。生我者母，见子为虚邪，我克者为实邪，生我者为微邪，克我者为贼邪，生我
者为正邪，自病。第二日传至亥，足厥阴肝，属木，心属火，木生火。为母生子，为虚邪，宜补
肝泻脾而愈。第三日传至戌，足太阳膀胱属水，心属火，水克火，客胜主，为贼邪，其日虽困不
死。从初病至第三日是戌，子为火运，子为火气，为水不能克火，一水不能克三火也。（据子午，
少阴，君，太子者，本属肾水，传于戌，乃表里也，非贼邪也。）第四日传至酉，足阳明胃属土，
心属火，火生土，为虚邪，宜补心则愈。第五日传至申，足少阳胆，属木，心属火，木生火，母
见子，为虚邪，宜补肝泻脾。第六日传至未，足太阴脾属土，心属火，火生土，为实邪，补脾则
愈。第七日传至午，足少阴肾属水，心属火，病七日，至壬辰，木运为水气，木运生火，水气克
火，中半之道，其人虽然不死，大困矣。第八日至巳，手厥阴心包络属火，两火相逢，遇比和，
或日合辰，自差也。
To understand the transmission patterns and syndromes of cold damage diseases in the four seasons, one must superimpose the individual's birth year stem-branch (Gan-Zhi) onto the positions of the left and right intercalary Qi. When Si Di (Earth Ruler) is in Yang, add the Left Intercalary Qi; when in Yin, add the Right Intercalary Qi. Count up to the position of Si Tian (Heaven Ruler) to see which Zang-Fu organ is affected first.
For example, consider a person born in the Geng-Shen year who falls ill on the Ji-Mao day. With Hand-Yangming Large Intestine as Si Tian, three stems-branches prior is Ren-Wu. Hand-Shaoyin Heart is Yin, serving as Zai Quan (Underground Ruler). The Hand represents Yang branches. Hand-Taiyin Lung serves as the Left Intercalary Qi. Thus, place Wu (Horse) upon the Left Intercalary Qi and count to Mao (Rabbit), arriving at Yin (Tiger), which corresponds to the San Jiao (Triple Burner). On the first day, the San Jiao is affected, becoming the primary disease. On the second day, Chou (Ox), Taiyin Spleen Earth: San Jiao Fire generates Earth, constituting Minor Evil (Wei Xie); one should tonify the Heart and drain the Spleen first. On the third day, transmission reaches Zi (Rat): Foot-Shaoyin Kidney is described as Fire in this context (note: traditionally Water, but following text logic regarding Heart meridian resolution), and San Jiao is also Fire; one should resolve the Heart Meridian pathology. On the fourth day, transmission reaches Hai (Pig): Foot-Jueyin Liver Wood, while San Jiao is Fire; Wood generates Fire, constituting Empty Evil (Xu Xie); tonifying the Liver and draining the Heart will lead to recovery. On the fifth day, transmission reaches Xu (Dog): Foot-Taiyang Bladder Water, while San Jiao is Fire; Water overcomes Fire, representing Guest overcoming Host (Ke Sheng Zhu); the patient will surely die. Additionally, the day branch Gui-Wei indicates Gui belongs to Kidney Water.
(There are two methods: one uses the person's natal stem-branch, the other uses the onset day's stem-branch. One method adds left/right intercalary Qi to the day stem-branch; another adds them to the natal stem-branch, both counting to the day stem-branch. Physicians should deduce carefully, as these methods have been verified.)
Consider another case: a person born in the Jia-Zi year falls ill on the Wu-Wu day. Shaoyin (Heart/Kidney) governs Si Tian. Three stems-branches prior is Gui-You. Foot-Yangming Stomach is Zai Quan. You is Yin, intersecting with Shaoyang, serving as the Right Intercalary Qi. Place Jia-Zi on Shen (Monkey) and count to Wu (Horse), arriving at Xu (Dog), corresponding to the Bladder. The first day is the primary disease. On the second day, transmission reaches You (Rooster): Foot-Yangming Stomach, Stomach is Earth, Bladder is Water; Earth overcomes Water, Guest overcoming Host, constituting Robber Evil (Ze Xie); death is certain. If illness occurs on a Tai Yi flow day, ten out of ten cases result in death, with only one chance of life. On the second day, the Stomach is affected on the Ji-Wei day, associated with Earth Transport (Yun) and Earth Qi. Three Earth elements overcome one Water element; the patient will perish before Wei hour, due to excessive Earth suppression.
Consider again: a person born in the Ren-Shen year falls ill on the Ji-Chou day. Hand-Taiyin Lung governs Si Tian. Three stems-branches prior is Taiyang, Hand-Taiyang Small Intestine governs Si Di. Chen is a Yang branch, combined with Hand-Jueyin Pericardium as the Left Intercalary Qi. Count Ren-Shen up to Si Tian, arriving above at Chen, corresponding to Hand-Taiyang Small Intestine Fire. On the first day, the Small Intestine is affected, becoming the primary disease. On the second day, transmission reaches Mao (Rabbit): Hand-Yangming Large Intestine Metal, Small Intestine Fire; Fire overcomes Metal, Host overcoming Guest, constituting Minor Evil; draining the Lung and tonifying the Small Intestine will lead to recovery.
Consider again: a person born in the Bing-Yin year falls ill on the Bing-Xu day. This day features Bing-Xin Water Transport, Chen-Xu Taiyang, representing Water Qi, a Tian Fu (Heavenal Match) day; the illness is difficult to cure. Here, Foot-Taiyang Bladder governs Si Tian. Three stems-branches prior governs Si Di: Xin-Chou Foot-Taiyin Spleen governs Si Di. Chou is a Yin branch, Zi is the Right Intercalary Qi. Place Bing-Yin on the Right Intercalary Qi and count to Si Tian, arriving above at Zi, corresponding to Hand-Shaoyin Heart; this is the first day of infection. "Generating me" is Mother; seeing Son constitutes Empty Evil; "I overcome" constitutes Solid Evil; generating me constitutes Minor Evil; overcoming me constitutes Robber Evil; generating me constitutes Correct Evil (Zheng Xie), self-disease. On the second day, transmission reaches Hai (Pig): Foot-Jueyin Liver Wood, Heart Fire; Wood generates Fire. Mother generating Son, constituting Empty Evil; tonifying Liver and draining Spleen leads to recovery. On the third day, transmission reaches Xu (Dog): Foot-Taiyang Bladder Water, Heart Fire; Water overcomes Fire, Guest overcoming Host, constituting Robber Evil; although distressed, the patient will not die. From onset to the third day (Xu), Zi represents Fire Transport and Fire Qi; Water cannot overcome Fire, as one Water cannot overcome three Fires. (Regarding Zi-Wu, Shaoyin Jun Huo, Taizi, originally belonging to Kidney Water, transmitting to Xu involves exterior-interior relationship, not Robber Evil.) On the fourth day, transmission reaches You (Rooster): Foot-Yangming Stomach Earth, Heart Fire; Fire generates Earth, constituting Empty Evil; tonifying Heart leads to recovery. On the fifth day, transmission reaches Shen (Monkey): Foot-Shaoyang Gallbladder Wood, Heart Fire; Wood generates Fire, Mother seeing Son, constituting Empty Evil; tonifying Liver and draining Spleen. On the sixth day, transmission reaches Wei (Goat): Foot-Taiyin Spleen Earth, Heart Fire; Fire generates Earth, constituting Solid Evil; tonifying Spleen leads to recovery. On the seventh day, transmission reaches Wu (Horse): Foot-Shaoyin Kidney Water, Heart Fire. By the seventh day of illness, reaching Ren-Chen day, Wood Transport becomes Water Qi; Wood Transport generates Fire, Water Qi overcomes Fire, reaching the midpoint; although the patient will not die, they will be severely weakened. On the eighth day, reaching Si (Snake), Hand-Jueyin Pericardium Fire; two Fires meet, encountering harmony (Bi He), or if Day and Branch harmonize, the disease resolves spontaneously.