For best results in gongfu cha, brew in the traditional gaiwan or in a Yixing teapot. Too high water temperature would burn the leaves, resulting in bitter taste.
Zhang Ping Shui Xian bricks (bricklets?) are formed by hand pressing in a small, wooden mould before being individually wrapped and dried over hot ash. The bricks are then vacuum sealed to preserve freshness. Watch this short clip to see the moulding in action: