China's Military Technological Milestones - includes date and yield of China's first neutron bomb 210 B.C. (2,200 years ago): China invents chrome-plating technology during Qin Dynasty under emperor Qin Shihuang. 1964: China detonated a 22-kiloton atomic bomb during the Mao Zedong administration. 1967: China detonated a 3.3-megaton thermonuclear bomb that was designed with abacus calculations. 1970: China successfully sends its first satellite into space - the Dong Fang Hong I 1971: China successfully launched its first DF-5 ICBM with 12,000-15,000km range and capable of carrying a five-megaton "city buster" thermonuclear warhead. 1984: China built its first cryogenic YF-73 rocket engine. 1988: China test-detonates a 1- to 20-kiloton Neutron Bomb on September 29, 1988. (Source: Nuclear Weapon Tests - China Nuclear Forces) 1995*: China built indigenous DD3 nickel-based single-crystal superalloys prior to 1995. (Earliest English article citation is year 1995. However, actual DD3 discovery was probably closer to year 1990) 1998: Chinese J-10 Vigorous Dragon had its first flight. Officially unveiled in 2007. 2000: Chinese JSTARS Tu-154M/D Electronic Intelligence Aircraft in service (e.g. Careless B-4138). 2000: China successfully sends its first GPS satellite (Beidou) into space. 2001: Chinese Type 99 Main Battle Tank in service. 2002: China's Type 093 Shang-class nuclear attack submarine (SSN) is launched. 2003: China sends its first taikonaut Yang Liwei into space. 2003: China's KJ-2000 AWACS with domestic AESA radar has its first flight. 2003*: DD6 is China's indigenous second-generation nickel-based single-crystal superalloy (Earliest English article citation is year 2003. However, actual DD6 discovery was probably closer to year 2000.) 2005: China's Type 052C Lanzhou-class AESA-equipped destroyer entered service. 2006: China's WS-10A turbofan engine certified for production. 2007: China clones world's first rabbit. 2007: Chinese direct-ascent ASAT shoots down orbiting satellite. 2007: Chinese DF-31A MIRVed ICBM in service. 2008: China conducts its first spacewalk with taikonaut Zhai Zhigang. 2008: China orbits its first data tracking and relay communications satellite - Tianlian I 2009: Public disclosure of China's 5,000km "Underground Great Wall" 2010: China builds world's-fastest supercomputer Tianhe-1A. 2010: Chinese GBI (i.e. ground based interceptor) shoots down a ballistic missile during mid-course phase. 2010: Chinese WZ-10 Attack Helicopter in service. 2010: Chinese Type 094 Jin-class nuclear missile ballistic submarine (SSBN) in service. 2010: Chinese Yaogan 9 NOSS (Naval Ocean Surveillance System) satellite trio in orbit. 2011: Chengdu J-20 stealth superfighter has first flight on January 11, 2011. 2012: China sends its first woman taikonaut Liu Yang into space on a 10-day mission. 2012: Chinese Jialong manned submersible completes world record-breaking 7,000 meter dive. 2012: First sighting of next-generation AESA radar for Type 052C destroyer. 2012: DF-41 10-MIRV-capable ICBM with 12,000-15,000km range had first flight on July 24, 2012. 2012: Chinese Type 056 corvette enters service. 2012: New Chinese thermonuclear-capable IRBM with 4,000km range (to potentially strike Guam). 2012: China's Beidou System successfully covers all of China and the surrounding region. 2012: Shenyang J-31 medium-range stealth fighter has first flight on October 31, 2012. 2013: China's Y-20 heavy-lift military transport first flight. [Note: I will update this list as new weapon systems enter service. For example, China's Type 095 nuclear attack submarine is expected to enter service in 2015.] ---------- China's Terra-Cotta Army: 5 Things You Should Know | TIME.com "5 Things You Didnâ€™t Know About Chinaâ€™s Terra-Cotta Army By Kate Springer | May 04, 2012 ... 1. Preservation Power Archaeologists have unearthed roughly 40,000 bronze weapons from the terra-cotta pits. From spears to battle axes, crossbows to arrowheads, these exquisitely made pieces have been preserved with the help of a protective chromium coating. Though both the Germans and Americans invented this chrome-plating technology in 1937 and â€™50, respectively, it existed in China 2,200 years ago."