getTaiXi method
Implementation
String getTaiXi() {
int ganIndex = (2 == _sect) ? _lunar.getDayGanIndexExact2() : _lunar.getDayGanIndexExact();
int zhiIndex = (2 == _sect) ? _lunar.getDayZhiIndexExact2() : _lunar.getDayZhiIndexExact();
return LunarUtil.HE_GAN_5[ganIndex] + LunarUtil.HE_ZHI_6[zhiIndex];
}