The People's Republic of China marked its 70th anniversary on Tuesday with a series of National Day celebrations at the heart of the country's capital. The massive events in Tian'anmen Square, such asunique military parade, massive Pageantry(盛典),(design)to be environmentally(friend). The 70-gun salute that kicked off the day's events(include) pollution control technology. According to the Global Times. The result wasnearly zero emissions were created by the firing of the 56 cannon shells. The parade concludedthe release of 70, 000 "peace doves". They were contributed by local pigeon lovers,trained and volunteered their birds for event.(answer) a call from the Beijing Carer Pigeon Association. These borrowed birds were trained(make) their way home after their release in the center of the city. Some pigeon(own) shared photos online of their returning birds. 70,000 colorful balloons were also released. The balloons were made of an eco-friendly and biodegradable plastic.