Not sure what is in pics 3 and 4, but the rest looks like a compressed pu-erh tea brick made with whole leaves. See here: http://en.wikipedia.org/wiki/Tea_brickBreak a piece off and steep it like you would normal tea leaves.
They displayed a giant mural that included a picture of 1989 protest at Tiananmen as well as the sensitive words "June 4" (6 - 4), marking the day of the massacre.Shenzhen Interpreter
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