Action (of a medicinal) on a particular channel and the organ to which the channel homes. For example, platycodon (Platycodonis Radix, 桔梗jié gěng) and coltsfoot (Farfarae Flos, 款冬花kuǎn dōng huā), treat cough and panting and are said to enter the lung channel; gastrodia (Gastrodiae Rhizoma, 天麻tiān má), scorpion (Scorpio, 全蝎quán xiē), and antelope horn (Saigae Tataricae Cornu, 羚羊角líng yáng jiǎo) treat convulsions and are said to enter the liver channel. Some medicinals enter two channels or more, indicating that they have a broad scope of action. For example, apricot kernel (Armeniacae Semen, 杏仁xìng rén) enters the lung and the large intestine, and treats both cough and constipation. Alisma (Alismatis Rhizoma, 泽泻zé xiè) enters the kidney, bladder, and triple burner channels, and treats water-damp problems.