This Agreement and the Registration Rights Agreement, and to the extent incorporated herein, the Merger Agreement, constitutes the entire agreement of the Subscriber and the Company relating to the matters contained herein and therein, superseding all prior contracts or agreements relating to such matters, whether oral or written. Notwithstanding the foregoing, this Section 21 shall not affect any confidentiality obligations of the Subscriber to the Company or Borqs pursuant to any confidentiality agreements entered into by the Subscriber prior to the date hereof.