内容简介：
在经过了六次非同寻常的探险后，探险小龙队队员们手中掌握的所有线索都指向了中国的万里长城。在古长城遗址，探险小龙队遭遇了更加奇怪的事情，他们进入了异时空的"桃花源"，并且见到了神奇的木制机器生物和人。与此同时，一队自未来的科考人员与小龙队员们不期而遇。小龙队员们用神秘老乞丐给他们的青砖，开启了整个万里长城的远古密码......
内容简介：
在经过了六次非同寻常的探险后，探险小龙队队员们手中掌握的所有线索都指向了中国的万里长城。在古长城遗址，探险小龙队遭遇了更加奇怪的事情，他们进入了异时空的"桃花源"，并且见到了神奇的木制机器生物和人。与此同时，一队自未来的科考人员与小龙队员们不期而遇。小龙队员们用神秘老乞丐给他们的青砖，开启了整个万里长城的远古密码......
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