Chinese turbofan history goes way beyond the 1990s.

China had a long series of turbofan projects. Again from Jane’s:

Over the past three decades the Chinese aerospace industry has developed a number of turbofan aero-engines: WS5, WS6, WS6A, Number 4 Lift-fan, WS8, and WS9. While a number of these were less than successful and did not see deployment, valuable experience was gained for more current efforts.

The WS5 turbofan was developed from the WP6 turbojet by the Shenyang Aero-Engine Research Institute and the Chinese Aeronautical Establishment during the late 1960s and early 1970s to re-engine the H-5 bomber, but while apparently successfully developed to the prototype stage, did not see certification. The WS6 was a domestic design also developed by Shenyang during the 1960s. However, WS6 development was delayed by the Cultural Revolution, and while prototypes were developed in the early 1980s they did not see certification.

The WS8 was a front-fan, axial flow, two spool turbofan type with a short bypass duct developed by the Chengdu Aero-Engine Factory and Shanghai Aero-Engine Factory during the early 1970s as the proposed power plant for the domestic Y-10 heavy transport aircraft.

New machining and welding production techniques were used in its development, as was the use of titanium alloy (17 per cent of engine weight), and new surface treatments such as Ni-Cd diffused coating against corrosion at moderate temperatures, graphite varnish, and aluminising siliconizing of turbine blades against high-temperature corrosion. As the Y-10 did not reach full production, and the two prototype aircraft were powered by foreign aero-engines, the WS8 did not reach certification. However, infrastructure constructed for its development in Shanghai was retrofitted to be a standard open test bed for the thrust calibration of new aero-engines.

A major aero-engine milestone for China was the mid-1970s purchase of the manufacturing license for the Rolls-Royce Spey MK202 turbofan (developed from the commercial Spey MK511, and used on RAF F-4 Phantom fighters and US A-7 attack aircraft). This technology transfer purchase was made with the recognition of the steadily declining level of Chinese aero-engine technology by international standards. The Chinese designation for this aero-engine was WS9. It was produced by the Xi’an Aero-Engine Factory, with massive technical assistance from various sub-suppliers, institutes, colleges and universities in Shaanxi Province to produce toolings and translate technical documents (translation and copying of 420,000 pages of documentation, plus 30,000 tooling design drawings and manufacture).

As highsea said, how funny is that, congratulations! You just adopt another god. But to me, that’s no different, u’d better say as you said, because I know u better than that anonymity , so I’ll use ur concrete logic u love to use: before you come out any concrete proof saying that WS10 is based on any Russian core engine, I won’t answer any of ur nonsense

Let’s see the WS-10 program started in the 1980s during the height of US-Chinese collaboration and according to Jane’s Aircraft and Propulsion

The Shenyang Aero-Engine Factory began the subcontract manufacture of the General Electric CF6 and CFM56 commercial turbofan
aero-engines during the early 1980s. To meet GE specifications, Shenyang put in place quality and advanced manufacturing systems to
meet US airworthiness standards. GE also provided a contract to the Xi’an Aero-Engine Company to manufacture the turbine discs for the
LM2500 naval and industry gas-turbine engine.

Perhaps China did learn a bit from the AL-31 but the core most definitely came from the CFM56 since the project started when the USSR was still an enemy.

WS-10A is certified. It’s a F-110 class engine with 32,000kg of thrust. Higher than the AL-31.

And it’s certified because it’s been flying around in a J-11 for the past two years.

The J-11 flew in China and not some other country because China have the best facilities in Asia (outside possibly Japan) to test and produce its own engines.