You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What nationality of postage stamp features an actor from the movie Mystery 6?" whose answer is Chinese postage stamps.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Lee Dong Hae postage stamp
Useful Output:

Doc 1: #superJunior #leeteuk #heechul #yesung #shindong #eunhyuk #donghae #siwonchoi #ryeowook #kyuhyun #leedonghae #koreanidol #kpopidol #kpop
Doc 2: #superJunior #leeteuk #heechul #yesung #shindong #eunhyuk #donghae #siwonchoi #ryeowook #kyuhyun #leedonghae #koreanidol #kpopidol #kpop
Doc 3: Super Junior's Lee Dong Hae suffered arm pain following a dose of COVID-19 vaccine. The singer's posts about the vaccine on his Instagram story
Doc 4: Donghae's stage name means “East Sea” in Korean. · He is one of the first four Korean artists to appear on Chinese postage stamps.
Doc 5: He is also one of the first four Korean artists to appear on Chinese postage stamps. Pre-debut. Donghae was born in Mokpo, Jeollanam on 15 October 1986.