getPrevQi method
Implementation
JieQi getPrevQi([bool wholeDay = false]) {
int l = (JIE_QI_IN_USE.length / 2).floor();
List<String> conditions = <String>[];
for (int i = 0; i < l; i++) {
conditions.add(JIE_QI_IN_USE[i * 2 + 1]);
}
return _getNearJieQi(false, conditions, wholeDay)!;
}