https://docs.google.com/document/d/1MmwvhBRLqL1dkSxKFPc_3emi7hnh4EflI6PNTgyyH5Y/edit?usp=sharing
Author: Liang Li (Page 3 of 6)
https://docs.google.com/document/d/1GyT8tH6OPafMi0wS0Do5fDIKS2dCf4QWxOEYxZ6JThc/edit?usp=sharing
https://docs.google.com/document/d/1xrU7HMiruGd_o4SaoG5tuDlpsMLzYPVO2DMbOXBUKbQ/edit