According to China News Weekly, Facebook’s early employee Yu Chao had worked with Marcus for half a year and had contacts with Marcus team members. He revealed that in early 2018, Marcus stepped down as a messenger and began to set up a project team for researching blockchain within Facebook, recruiting more than 100 engineers. "Zuckerberg mentioned the cryptocurrency in the 2018 New Year's wish. Marcus has a good relationship with him. The Libra project was also established after Marcus's long-term lobbying." Yan Chao believes that as a technology, block The biggest problem with the chain in front of the Marcus team is to think about how cryptocurrencies can maximize their value on the Facebook platform and solve the trust problem.