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Research

Working Paper

Cyber Inequality (with Lu Liu, Chen Lin, Li Liao, and Xincheng Wang ) First Draft: March 2023
           --- We study the income inequality among streamers using the administrative data of a leading Chinese live-streaming platform. Income inequality increased rapidly as the platform expanded from 2018 to 2020 — for example, the income share of the platform’s top 10 streamers increased from 14.82% to 45.15% as its revenue grew by 142%. We employ both IV and regression discontinuity design to estimate how platform expansion causally increases income inequality.

Subjective Risk-Return Trade-off (with Chen Lin, and Chanik Jo) First Draft: July 2022 ​
           --- We conduct a novel survey and document a robust “higher risk, lower return” relationship among risky assets. This relationship remains significant even for wealthy, highly educated, and financially-literate individuals. Negative risk-return trade-offs translate into under-diversified portfolios and over-investment in assets with high subjective Sharpe ratios. 

Main Street's Pain, Wall Street's Gain (with Nancy Xu) Updated March 2023, First Draft: Dec 2021, 
           --- In the Covid period, a one standard deviation increase in the initial jobless claims (IJC) surprise (8.7%) significantly predicts higher daily major stock index returns of 26-38 basis points. We highlight fiscal policy expectation as a new channel that explains the "bad is good" stock price responses, and provide time-series and cross-section evidence. 

Persistence despite Revolutions (with Alberto Alesina, Marlon Seror, David Yang, and Weihong Zeng) Updated August 2022, First Draft: August 2020, 
          --- Intergenerational Income persistence across Communist revolutions in China. The paper emphasizes the importance of intra-household culture transmission.


Distrust as Cryptocurrency Fundamental (with Bo Tang and Yulin Zhong) Updated March 2023, First Draft: Dec 2020
​          --- Distrust in domestic institutions contributes to cryptocurrency demand and explains the price deviation dynamics.
          --- International Conference on Smart Finance (ICSF) 2022 Best Paper Award

Work in Progress

Ponzi Games on Blockchain (with Ke Tang, Yifei Shuang, Zhao)

Language Unification and Identity 

Low-quality Issuance (with Shushu Liang)

Millionaire or Tiger Parents (with Mingzhu Tai, Tianwang Liu, Wanting Yan)

Publication

​Redeemable Platform Currencies (with Kenneth Rogoff) August 2021, Review of Economic Studies, Published in May 2022
           --- A model of digital currency backed by redemptions on internet platforms. We discuss the platform currency features and optimal design.

Converging to Convergence (with Michael Kremer, and Jack Willis) August 2020, NBER Macroeconomic Annual 2021, Published in May 2022
           --- Absolute convergence holds in the recent two decades. Institutions also converge and contribute to the economic convergence.
​
Bubble for Fama (with Andrei Shleifer and Robin Greenwood) July 2018, Journal of Financial Economics
, Published in January 2019
​          --- Empirical predictability in stock market bubble 
          --- JFE Fama - DFA Best Paper Award 

Policy Writing

Devise more controls to protect cryptocurrency investors (with Wenzhi Ding, Chen Lin) Nature Correspondence (short comment)
            --- Separate regulatory norms for CEX and DEX
How Hong Kong Could Maintain its Competitiveness as an International Financial Centre (with Pingyang Gao, Ruijing Meng) Hong Kong Economic Policy Green Paper
           --- Hong Kong stock market low-valuation (P/B ratio less than 1) puzzle and corporate governance

Unpublished Manuscripts

Educated Youth Should Go to the Rural Areas: A Tale of Education, Employment and Social Values July 2018 (Last Updated)
          ---  Sent-down youth movement induces more rural educational attainment, higher level of trust, subjective well-being, and better job satisfaction. 






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