The 19th CPC National Congress came at a key time in China's history, a Chinese envoy speaking to an official gathering in Boston said on Wednesday.

Zhang Qiyue, consul general of China in New York, said the 19th Communist Party of China's National Congress was particularly significant because it was concluded at a crucial stage for China - when it has a chance to achieve the goal of building a moderately prosperous society and to strive for the success of socialism with Chinese characteristics for a new era.

"Over the past week, a very important event took place in China - the twice-a-decade Party congress," Zhang said in a speech to more than 600 guests at the Great Hall of the Massachusetts State House.