北京八景之一的北海公园白塔山,绚丽多姿,风景优美,是中外游人喜爱登临观光的场所。白塔山原名琼华岛,于清顺治八年(一六五一年)在原庆寒殿旧址兴建白塔一座,从此名为白塔山。白塔山不仅是清代帝王贵族游玩娱乐之所,而且又是与清廷安危紧密相连的重地。当年·在居高临下的白塔后面设置有五门大炮和五条刹杆,确实就是清初为预防不测而置设的京师警报设备。清入关前在盛京时,凡遇紧急情况,皆以鸣鼓为号,以示紧急集合。自入北京,因京师辽阔,即设炮于煤山(今北京景山公园内的景山),以炮声为集合信号。后又停止。清顺治十年十一月间,经皇叔、和硕郑亲王济尔哈朗等议政王贝勒大臣议奏·顺治皇帝准奏,在白塔山、内城九门各设信炮五门。立年孟春,又经都统、兵部尚书噶达浑等人上疏,并顺治皇帝 Beihai Park, one of the eight scenic spots in Beijing, is a beautiful and colorful place where visitors from home and abroad enjoy sightseeing. Baita formerly known as Joan Island Island, Yu Shunzhi eight years (1651) in the original Qing Han Temple site to build a white tower, from the name Baita Mountain. Baita Mountain is not only the imperial aristocracy of Qing Dynasty entertainment play, but also closely linked with the safety of the Qing court. That year, there were five cannon and five brake brakes behind the commanding White Tower. This was indeed the capital warning equipment set up in the early Qing Dynasty to prevent mishaps. Before the clearance of the capital, at the time of Shengjing, where there was an emergency, we all hoisted the drums to show the emergency collection. Since entering Beijing, due to the vast capital of Beijing, the artillery is located in Meishan (now Jingshan Park in Beijing), with cannon as a collection signal. After it stopped. Qing Shunzhi ten years in November, the uncle, Horst Prince Zheng Seoul, such as Prince Berger Minister Baylor discussed the emperor Jun Shunzhi, Baita, Inner City, nine letters each set five guns. The establishment of Meng Chun, also by the Du Tong, Bingbushangshu Gadda muddy and others on the sparse, and Shunzhi emperor