洋行 ようこう
yōkō

Noun
Suru Verb

1. overseas travel (to Western countries); going abroad (to study or travel)

どのくらい洋行 ようこうしていたのですか。
donokurai yōkō shite ita nodesuka.
How long have you been abroad?
Noun

2. store operated by a foreigner (in pre-communist China)