revenue tied to cryptocurrency trading tumbled 78% to $51 million from 233 million in the quarter before. and robinhood said that barring any change in the market environment, the headwinds that drag down the last quarter would persist until the end of the year. with little reason for cheer, those comments only drove the stock lower. it looks like tensions between the us and china are flaring again, after washington revoked the us licence of one of china's biggest telecoms companies citing "national security" concerns. the white house has ordered china telecom to stop providing services in america within 60 days. joining me now is suranjana tewari from our asia business hub of singapore. how big a deal is this for china telecom, how much business do they do in the us?