Beijing 1954 GK Zone 20N (deprecated, 3.6) - EPSG:21480

WKT

PROJCS["Beijing_1954_GK_Zone_20N", 
	GEOGCS["GCS_Beijing_1954", 
		DATUM["D_Beijing_1954", 
			SPHEROID["Krasovsky_1940", 6378245.0, 298.3]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Gauss_Kruger"], 
	PARAMETER["False_Easting", 500000.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", 117.0], 
	PARAMETER["Scale_Factor", 1.0], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["Beijing_1954_GK_Zone_20N", 
	BASEGEOGCRS["GCS_Beijing_1954", 
		DATUM["D_Beijing_1954", 
			ELLIPSOID["Krasovsky_1940", 6378245.0, 298.3]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Gauss_Kruger", 
		METHOD["Gauss_Kruger"], 
		PARAMETER["False_Easting", 500000.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Central_Meridian", 117.0], 
		PARAMETER["Scale_Factor", 1.0], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Northing (Y)", north, 
		ORDER[1]], 
	AXIS["Easting (X)", east, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "21480"]]

Data from @esri/proj-codes

{
  "wkid": 21480,
  "latestWkid": 21480,
  "gcsWkid": 4214,
  "macro": "PE_PCS_BEIJING_1954_GK_20N",
  "name": "Beijing_1954_GK_Zone_20N",
  "wkt": "PROJCS[\"Beijing_1954_GK_Zone_20N\",GEOGCS[\"GCS_Beijing_1954\",DATUM[\"D_Beijing_1954\",SPHEROID[\"Krasovsky_1940\",6378245.0,298.3]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Gauss_Kruger\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",117.0],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"Beijing_1954_GK_Zone_20N\",BASEGEOGCRS[\"GCS_Beijing_1954\",DATUM[\"D_Beijing_1954\",ELLIPSOID[\"Krasovsky_1940\",6378245.0,298.3]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Gauss_Kruger\",METHOD[\"Gauss_Kruger\"],PARAMETER[\"False_Easting\",500000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",117.0],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Northing (Y)\",north,ORDER[1]],AXIS[\"Easting (X)\",east,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"21480\"]]",
  "description": "Beijing 1954 GK Zone 20N (deprecated, 3.6)",
  "authority": "EPSG",
  "version": "2.1(3.0.1)",
  "deprecated": "yes",
  "areaname": "China - 114~E to 120~E onshore",
  "extent": {
    "slat": 22.14,
    "nlat": 51.52,
    "llon": 114,
    "rlon": 120
  }
}