吞日精者，用日出卯时，坐西面看东，想日如车轮形，象而吞之，七十二口，亦如河车 掏起，
昂头搬运，入项后为枕，枕之如小乘人有圆光也。每日吞之七十二口毕，方吞月华龙虎大丹。
吞月华者，须是过上弦八日晚后，背日向月坐，想月华入于口，八十一咽，至二十三日下弦
即罢之。至后
月八日，根据前法吞之。
龙虎大丹喻月精丸。月初出时、月中时、月入时，向月正立不一八通，仰头喻月精，八咽之，
令阴气长归，人喻之阴精益成，子道，通吸月光精归，人至四十九以上还生子，断绪者即有子。
久行不已，即成仙矣。
存五星当按八素，以五星为始，存以生气，时若不王星先出者，故宜不先存五星也。至于视
星入室任意，唯以勤感为上耳。亦不必须都见星，然后速通也，视之益审耳。清宁君告存想要法，
当觉目观五星于方面，并乘芒而下行，俄然后根据五星而存主星。但吞咽一芒毕，又当镇星，又存
镇星良久，总五星各一芒，使俱入口而咽之，如镇星，星过数也。
范幼仲恒服三气。三气之法，存青气、白气、赤气，各如绵，从东方日下，来入口中，挹之
九十过，自饱便止。为之十年，身中自有三色气，遂得神仙。此高元君太素内景法，旦旦为之，
临日施行，视日益佳。
吞服日精的方法：在日出时的卯时，面向东方而坐（背对西方），想象太阳像车轮一样大，模仿其形状并吞咽，共七十二口。这也如同“河车”功法中的“掏起”，昂起头进行搬运，使气进入颈后作为枕头，姿势就像小乘佛教修行者头顶有圆光一样。每天吞服完这七十二口之后，再吞服月华龙虎大丹。
吞服月华的方法：必须等到上弦月过后的第八天晚上，背对着太阳、面向月亮坐下，想象月光精华进入口中，吞咽八十一咽。到了二十三日下弦月时便停止。等到下弦月之后的第八天，按照前面的方法再次吞服。
所谓“龙虎大丹”，比喻的是“月精丸”。在月初出、月中天、月落时，面向月亮端正站立，不重复做一百零八遍，仰头承接月精，吞咽八次，使阴气增长。人们称之为“阴精益成”，即子道通畅，吸入月光精华归入体内。人过了四十九岁还能生育子女，原本断绝子嗣的人也能重新得子。长期练习不停止，就能成仙。
存想五星的方法应当依据《八素》篇。以五星为起始，存想生气。如果当时水星先出现，就不宜先存想五星。至于观看星星入室是随意的，只要以勤诚感应为上等。也不一定要都看见星星，然后才快速贯通，只是看得更加仔细罢了。清宁君告知的存想方法：应当觉得目光看到五星在各个方位，并乘着光芒下行，随即根据五星来存想主星。但吞咽一道光芒完毕后，又应当存想镇星（土星），长时间存想镇星，总共五星各取一道光芒，使它们一起入口并吞咽，就像对待镇星一样，星数超过这个数目就不对了。
范幼仲常年服用“三气”。三气的方法：存想青气、白气、赤气，各自像棉絮一样，从东方的日下而来，进入口中，舀取九十多次，自己感到饱足就停止。这样做十年，身体中自然会有三色气，于是得以成仙。这是高元君的《太素内景法》，每天坚持做，面对太阳时施行，效果日益美好。
The method of swallowing the essence of the Sun: At the Mao hour (5-7 AM) when the sun rises, sit facing east with your back to the west. Visualize the sun as large as a chariot wheel, mimic its shape, and swallow it for seventy-two breaths. This is also similar to the "lifting" technique in the Heche (River Cart) practice: raise your head to transport the energy, entering the back of the neck as a pillow, resembling the halo (Yuan Guang) seen above the heads of practitioners of the Lesser Vehicle (Hinayana). After completing these seventy-two swallows daily, proceed to swallow the Longhu Dadan (Great Elixir of Dragon and Tiger).
The method of swallowing the Moon's radiance (Yuehua): It is necessary to wait until the evening after the eighth day following the first quarter moon. Sit with your back to the sun and face the moon, visualizing the moon's essence entering your mouth, and swallow eighty-one times. Stop this practice on the twenty-third day during the last quarter moon. On the eighth day after the last quarter moon, resume the practice according to the previous method.
The term "Longhu Dadan" (Great Elixir of Dragon and Tiger) refers to the Yuejing Wan (Moon Essence Pill). When the moon is rising, at its zenith, or setting, stand upright facing the moon. Do not repeat the cycle one hundred and eight times. Raise your head to receive the moon's essence and swallow eight times, allowing Yin Qi (Yin energy) to grow. This is referred to by people as "completion of abundant Yin essence," meaning the Zi Dao (path of conception/essence) is unblocked. By inhaling the essence of moonlight into the body, even those over forty-nine years old can conceive children; those previously barren will regain fertility. Continuous long-term practice leads to immortality.
The method of visualizing the Five Planets should follow the Ba Su (Eight Mysteries). Start with the Five Planets and visualize Sheng Qi (Vital Energy). If Mercury appears first, one should not begin by visualizing the Five Planets. Observing the stars entering the room is optional; diligence and spiritual resonance are paramount. It is not necessary to see all stars before achieving rapid circulation; rather, observation should be more precise. Qingning Jun instructed the visualization method: One should perceive the Five Planets in their respective directions, descending along their rays. Subsequently, visualize the ruling planet based on the Five Planets. After swallowing one ray, one must then visualize Zhen Xing (Saturn/Earth Star), maintaining this visualization for a long time. In total, take one ray from each of the Five Planets, make them enter the mouth together, and swallow them, treating Saturn similarly. The number of stars should not exceed this count.
Fan Youzhong consistently practiced taking the Three Qi (Three Energies). The method of Three Qi involves visualizing Green Qi, White Qi, and Red Qi, each resembling cotton wadding. They come from beneath the sun in the east, entering the mouth. Scoop and swallow them ninety-plus times, stopping when feeling full. Practicing this for ten years causes three colored energies to naturally form within the body, leading to immortality. This is Gao Yuanjun's Ta Su Nei Jing Fa (Inner Scenery Method of Great Purity). Perform it daily, practicing in front of the sun, and the effects will improve progressively.