EXHIBIT 24.2


                               POWER OF ATTORNEY

    The undersigned, Tianjin Sun Wise Oriented Assets Management Limited, a
company incorporated under the laws of the People's Republic of China with
limited liability (hereinafter referred to as the "Company"), does hereby make,
constitute and appoint each of the persons listed below as the Company's true
and lawful agent and attorney-in-fact (hereinafter referred to as the
"Attorney") to act either together or alone in the name and on behalf of the
Company for and with respect to the matters hereinafter described.

Name of Attorney:

                         Yu Ting
                         Wang Tong


    Each Attorney shall have the power and authority to execute and deliver any
Schedule 13D, Schedule 13G or Forms 3, 4 and 5 or any amendments thereto
required to be filed with the Securities and Exchange Commission under the
Securities Exchange Act of 1934 on behalf of the Company with regard to any
securities owned by the Company or any of its subsidiaries; and, in connection
with the foregoing, to execute and deliver all documents, acknowledgments,
consents and other agreements and to take such further action as may be
necessary or convenient for the Company in order to more effectively carry out
the intent and purpose of the foregoing.

    Agreements, commitments, documents, instruments and other writings executed
by the Attorney in accordance with the terms hereof shall be binding upon the
Company without attestation and without affixation of the seal of the Company.
The Power of Attorney conferred hereby shall not be delegable by any Attorney.
The Attorney shall serve without compensation for acting in the capacity of
agent and attorney-in-fact hereunder.


IN WITNESS WHEREOF, the Company has caused the Power of Attorney to be executed
as of the 18th day of May, 2017.


TIANJIN SUN WISE ORIENTED ASSETS MANAGEMENT LIMITED


By:  /s/ Liu Chunxiao
    ------------------------------------
     Name: Liu Chunxiao
     Title:  Director