{
  "id": "SP1",
  "name": {
    "en": "Yinbai",
    "gloss": "Hidden White",
    "zh-Hant": "隱白",
    "zh-Hans": "隐白"
  },
  "channel": {
    "id": "SP",
    "order": 1,
    "of": 21
  },
  "location": {
    "text": "On the big toe, beside the corner of the nail on the inner side."
  },
  "for": [
    "heavy periods",
    "a full belly",
    "restless dreaming"
  ],
  "press": {
    "text": "Light, steady fingertip-pad pressure, one minute each foot.",
    "seconds": 60,
    "sides": "both"
  },
  "cautions": [
    "Skip over broken skin or an ingrown nail."
  ],
  "source": "Zhenjiu Jiayi Jing, book 3",
  "url": "https://acupoints.com/en/points/sp1",
  "lastReviewed": "2026-08-24"
}