Separation and Union, True and Pathogenic Qi

When evil enters the vessels, cold makes the blood congeal and stagnate, heat makes the qi moist and slippery; the deficient evil takes advantage and lodges there, as river water is stirred by wind.

ORIGINAL夫邪之入于脉也，寒则血凝泣，暑则气淖泽，虚邪因而入客，亦如经水之得风也。

fū xié zhī rù yú mài yě，hán zé xuè níng qì，shǔ zé qì nào zé，xū xié yīn ér rù kè，yì rú jīng shuǐ zhī dé fēng yě。

Insert on the inbreath so that qi is not opposed; keep still and retain the needle so evil cannot spread; twirl on the inbreath, taking the arrival of qi as the aim; then draw the needle on the outbreath and withdraw as the breath ends, so that the great qi all leaves. This is called reduction.

ORIGINAL吸则内针，无令气忤；静以久留，无令邪布；吸则转针，以得气为故；候呼引针，呼尽乃去；大气皆出，故命曰泻。

xī zé nèi zhēn，wú lìng qì wǔ；jìng yǐ jiǔ liú，wú lìng xié bù；xī zé zhuǎn zhēn，yǐ dé qì wéi gù；hòu hū yǐn zhēn，hū jǐn nǎi qù；dà qì jiē chū，gù mìng yuē xiè。

First palpate and trace the point, press to disperse, push and smooth, flick to make the qi swell, pinch and insert, free the channel and take it; then draw the needle out and close the gate to keep the spirit in. Insert as the outbreath ends, still and long retained, taking the arrival of qi as the aim, as though waiting on an honoured guest and unaware that evening has come.

ORIGINAL必先扪而循之，切而散之，推而按之，弹而怒之，抓而下之，通而取之，外引其门，以闭其神，呼尽内针，静以久留，以气至为故，如待所贵，不知日暮。

bì xiān mén ér xún zhī，qiè ér sàn zhī，tuī ér àn zhī，dàn ér nù zhī，zhuā ér xià zhī，tōng ér qǔ zhī，wài yǐn qí mén，yǐ bì qí shén，hū jǐn nèi zhēn，jìng yǐ jiǔ liú，yǐ qì zhì wéi gù，rú dài suǒ guì，bù zhī rì mù。

When qi has arrived, guard it fittingly; draw the needle on the inbreath so qi cannot escape but stays in its place; then press the gate shut so spirit and qi remain and the great qi stays. This is called tonification.

ORIGINAL其气以至，适而自护，候吸引针，气不得出，各在其处，推阖其门，令神气存，大气留止，故命曰补。

qí qì yǐ zhì，shì ér zì hù，hòu xī yǐn zhēn，qì bù dé chū，gè zài qí chù，tuī hé qí mén，lìng shén qì cún，dà qì liú zhǐ，gù mìng yuē bǔ。