cān / guān / lǎo / zhái / shí / dǎo / yóu / jiè / shào / le / shàng / wū / de / cháo / xiàng / hé / yòng / tú参观老宅时,导游介绍了上屋的朝向和用途。While touring the old residence, the guide explained the orientation and purpose of the main rooms.