In today’s lesson, we practiced directional words to locate rooms within a building, focusing on a teaching building or 教学楼 (jiàoxué lóu). The building has four floors, and we discussed the locations of the chemistry lab, 化学实验室 (huàxué shíyàn shì), and the library, 图书馆 (túshū guǎn), with the lab being on the fourth floor next to the library. Key vocabulary included terms like 实验室在几层 (shíyàn shì zài jǐ céng?) asking which floor the lab is on, and words for ‘next door’ (隔壁, gébì) and ‘next to’ (旁边, pángbiān).