Ramires, Colombia international Jackson Martinez and Fredy Guarin were among the notable signings, while Pavel Nedvěd was appointed as second global ambassador for CSL. 2017 saw the Chinese Super League (CSL) catapulted to global attention. Players such as Oscar, Carlos Tevez, Ricardo Carvalho, Alexandre Pato and Mikel John Obi all moved east during the year. Guangzhou Evergrande won their 7th consecutive league title. 2018, in the 28th round of the 2018 Chinese Super League, the two title favourites Shanghai SIPG and Guangzhou Evergrande Taobao clashed head-to-head, with Shanghai SIPG coming away with 5 - 4 hard win over Guangzhou Evergrande Taobao to open up the points gap with Guangzhou Evergrande Taobao. At last, Shanghai SIPG won the 2018 Chinese Super League Champion, thus breaking Guangzhou Evergrande Taobao's 7-year monopoly of the Chinese Super League. At the 2019 CSL Mobilization Meeting, the CFA Referees Committee officially announced that a professional referee system will be introduced in the CSL in 2019, with two foreign referees including Mark Clattenburg, Milorad Mažić, and three local referees to be officially hired as the first professional referees in the history of Chinese football. The two foreign professional referees will be mainly responsible for enforcing the Chinese Super League, but will also provide coaching and training for local referees. Affected by COVID-19,the 2020 Chinese Super League has been postponed to July 25. The 16 teams will be divided into two groups to play in Suzhou and Dalian. This year's league was temporarily changed to a "Group stage + Knockout" format and adopted a tournament system. Planning cooperation structure The preparatory committee of the Chinese Professional Football League was established on May 27, 2016, with members from 5 CSL clubs, 3 CL1 clubs and 2 CL2 clubs, includes two CFA representatives. The blueprint is to have all of the three professional level leagues of China, the Chinese Super League, China Football League one and China Football League two separated from the League structure of the CFA. The PFL will be a private company wholly owned by its Member Clubs who make up the League at any one time. Each club is a shareholder, with one vote each on issues such as rule changes and contracts. The newly formed PFL would have commercial independence from The CFA, giving the PFL licence to negotiate its own broadcast and sponsorship agreements. The CFA will no longer hold any shares of the