Chen Dong (astronaut) 2016, marking China's longest manned space flight to date. The reentry module of the Shenzhou-11 spacecraft landed in Inner Mongolia around 2.15 p.m(China time) after detaching from the space lab on 17 November. For his achievements on the Shenzhou 11 mission, Chen was awarded the Spaceflight Merit Medal (Third Class) along with the honorary title of "hero astronaut" on 26 December 2016 by the Central Military Commission. Chen has twin sons. Chen Dong (astronaut) Chen Dong (; born 12 December 1978) is a Chinese pilot and astronaut selected as part of the Shenzhou program. A fighter pilot in the People's
Chinese as a foreign language neutral (轻声，denoted as no-mark in Pinyin) although the official name of the tones is Four Tones. Many other Chinese dialects have more, for example, Cantonese has six (often numbered as nine, but three are duplicates). In most Western languages, tones are only used to express emphasis or emotion, not to distinguish meanings as in Chinese. A French Jesuit, in a letter, relates how the Chinese tones cause a problem for understanding: Moser also stated that tones were a contributing factor to the difficulty of learning Chinese, partly because it is difficult for non-native learners to know how to convey emotion