Famed New York-based Chinese opera singer Sophie Lo is the mystery buyer of One Fulton Square’s $2 million penthouse.

The three-bedroom, three-bathroom apartment is 2,000 square feet and has nearly 1,100 square feet of outdoor space.

The luxury condos are part of a mixed-use project in Flushing, Queens, from developer Helen Lee.

It includes a hotel, retail shops and offices.