In this talk, first I will give some brief history of Hanbary Brown and Twiss (HBT) measurement on particle-particle correlation as well as some present situations in heavy ion collision (HIC), both at RHIC energy and low energy HIC. Unfortunately, these HBT measurements on identical particles were only limited for inclusive measurement with relative high temperature from the stable nuclei. Then I move on our new measurements on proton-proton momentum correlation from a complete kinematics exclusive measurement from a cool proton-rich nuclei. In details, two-proton relative momentum distributions from the break-up channels 23Al  p + p + 21Na and 22Mg  p + p + 20Ne at an energy of 60 ~70 A MeV have been measured together with two-proton opening angles at the projectile fragment separator beamline in the RIKEN Ring Cyclotron Facility. Our experimental results demonstrate that the emergence of diproton emission component from highly excited 22Mg relative to 23Al.