1柯大可是G城滨江小镇邮局的一名职工。这天早上,他像往常一样穿着浅绿色的制服,肩上挎着工具袋,沿着滨江大道逐个检修露天邮筒时,惊奇地发现靠近江堤的一个凉亭附近的10号邮筒上出现一个拳头大的缺口。“这是谁干的?”柯大可满腹狐疑地用钥匙打开邮筒,瞪大眼睛:一堆零散的信封中间,竟然有一块黑乎乎的石头。石头外围被黑色的硬壳包裹 1 Ke Da Kecheng City, Riverside Post Office, a worker. This morning, as usual he wore a light-green uniform and left his tool bag on his shoulder. As he took over the open-air mails one by one along Binjiang Avenue, he was surprised to find a big fist appeared on the No. 10 postbox near a gazebo near the river bank. The gap. “Who did this work?” Ke Da could openly suspect the key to open the postbox, wide-eyed: the middle of a pile of scattered envelopes, there is actually a dark stone. The outside of the stone is surrounded by a black hard shell