When tagging this sentence with Geocodes, 乙未, 冊命元昊為夏國主... … 置榷場於保安軍及高平寨, 第不通青鹽 I found a bug in MARKUS' pickup of the GIS coordinates from DILA.
Markus outputs as follows in the API window
PL000000043682, 保安軍, [No coordinate], 中國-陝西省-延安市-志丹縣
But the DILA coordinates are there. They produce as follows:
36.8229經度:108.7773(精確值)
I wonder if the problem is MARKUS API not recognising the (精確值) element?