This cache is not at the posted coordinates.
| 二 - 一 - 一| 一 |八 + 七|零|六-零|九|五-一|
|西|一+五+八|六+九+八|龙-零|五+一-四|七|九-五|五|
Don't get caught up in the font size or spacing. - is a minus sign. + is a plus sign.

You can validate your puzzle solution with certitude.