Proper noun
A river near Chengde, China.
(historical) A former name of Chengde, China.
(historical) A former province of China around Chengde.
Source: en.wiktionary.orgRehe was also incorporated into Manchukuo in 1933, taking Juu Uda and Josutu leagues along with it. Source: Internet
Meanwhile, the humiliated emperor died the following year at Rehe. Source: Internet