Note:
(a) "The day of that incident, an MA60 crash-landed in Kupang, Indonesia, injuring five."
(i) WSJ translation: "就在此次事故的同一天，一架新舟60飞机在印尼古邦迫降，造成五人受伤。"
(ii) Kupang https://en.wikipedia.org/wiki/Kupang
(is the biggest city and port on the island of Timor)
The eastern part of the island is East Timor, a sovereign state since 2002.
(b)
(i) WSJ places the English-language report behind a paywall.
(ii) Lacking online (at least in Chinese -language website, shown above) is a chart that appears in print (English) delineating the genealogy/pedigree of MA60. It helps tremendously in absorbing the report.
"Flght Path l China's efforts to break into civil aviation
1966 China's state-owned Xi'an Aircraft starts developing the Y-7 运-7, a turboprop seating up to 52. It is removed from commercial service after a [year] 2000 crash kills 49.
1970 China launches plans for a jetliner, the Y-10. It later abandons the program after deeming the jet uneconomical.
1988 Xi'an starts work on the Y-7-200A, an upgraded version of the Y-7.
1995 The US Federal Aviation Administration certifies China's Y-12 utility turboprop transport. About 200 Y-12s, seating 17 to 19, are in service mainly in China and developing countries.
1995 China submits the Y-7-200A for FAA approval. The process ends in 1996 without certification.
1999 Xi'an improves the Y-7-200A, renaming it the MA60 [Modern Ark]. China's aviation regulator certifies it the next year.
2002 China approves plans to develop ARJ 21, a regional jet seating up to 90.
2008 China begins developing the C919, a jetliner seating up to 174 that could compete with some Boeing and Airbus planes.
2014 China certifies the ARJ21. Like the C919, it is built by state-owned Commercial Aircraft Corp of China, or Comac.
2015 The FAA says it will consider certifying the ARJ21 after Comac upgrades it to Western airworthiness standards.
November 2015 The first C919 prototype rolls of the assembly line. The first production ARJ 21 is delivered to Chengdu Airlines.