河漢 is read as かかん (kakan) and means Milky Way.
かかん
kakan
かわ
discarded tiles
かわぐち
mouth of river
かわぎし
riverbank
かわら
dry riverbed
かせん
rivers
かっぱ
cucumber
かほくこうぎょうだいがく
Hebei University of Technology
かほくだいがく
Hebei University
かわらにんじん
Artemisia apiacea (species of artemisia)
かなんだいがく
Henan University
かせんこうじ
riparian works
かせんこうがく
river engineering