ruins / (literary) village / variant of 圩[xu1] / country fair
墟
=
土
+
虚
:
Xu Xian (xu) is taking care of the ruins (墟) of the Mir in front of the space station (Ø1). He uses a black hole (虚) to vacuum all the space dirt (土) which accumulated over time.
lining / interior / inside / internal / also written 裏|里[li3]
里
=
土
+
田
:
Mnemonic symbol: a sunflower. The 田 part looks like the blossom and 土 looks like the stem and leaves. Li Qingzhao (li) wants to put up a field (田) inside (里) the space station's living room (Ø3). First she puts some earth (土) here and there, and then she plants lots of sunflowers (里).
li, ancient measure of length, approx. 500 m / neighborhood / ancient administrative unit of 25 families / (Tw) borough, administrative unit between the township 鎮|镇[zhen4] and neighborhood 鄰|邻[lin2] levels