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<ref name="artifact_chance">The chance of appearing in an artifact spot is calculated by 冬根在远古斑点出现的几率由 <tt>GameLocation::digUpArtifactSpot</tt>. The base chance in code is 30计算获得。源码设定的基础几率是30% (0.5*0.6), but the actual chance is lower because artifacts and lost books are checked first and must all fail their checks.，但实际几率低于理论水平，这是挖掘一个远古斑点时，系统需要先检查是否能掉落古物和遗失之书。</ref><ref name="soil_chance">The chance of appearing in standard tillable soil is calculated by 在标准可耕地土壤方格中出现的几率按以下方法计算： <tt>GameLocation::checkForBuriedItem</tt>.</ref>