My comment:
(a) This report is based on Ian Easton, China's Top Five War Plans. Project 2049 Institute, Jan 6, 2019. https://project2049.net/2019/01/06/chinas-top-five-war-plans/
("PLA sources indicate that Chinese military strategists focus on five major conflicts scenarios [at page 1]. * * * The following will briefly outline how Chinese military writings envision the manner in which each of the PLA's five joint operations ['联合作战' where 'joint' means coordination between different 'service or branch of the military': page 2] might, in theory, play out. [the first scenario:] Joint Firepower Strike Operations against Taiwan[:] In this scenario, the PLA would employ missile and air strike against Taiwan with the aim of suppressing and destroying targets on the island [at page 3]")
These five scenarios are what Mr Easton gleans from PLA's internal documents; PLA itself does not say so.
(b) Regarding the nightmare scenario (quotation this VOA report: 噩梦假想情况) in Easton's article. India is unlikely to intervene. United States is iffy. As for the quotation in (a): It is unthinkable for China to conduct air strike, because there are so many missiles on each side.