Three weeks before leaving.
My Materials Science, 7 years (Computer "Science", also 7 years):
(@Tsinghua University)
Freshman: Proud of entering Tsinghua University; even if I didn't know what I was about to learn there. (First C programs.)
Sophomore: Materials Science: lattices, phases, defects... (network technique, Java)
Junior: Various materials science topics: ceramics, nano-materials, corrosion, thin films... first principle simulation. (hardware technique)
Senior: Senior design: phase transformation of multi-layer bi-metal thin films. (data structure)
(@Ohio State University)
First year graduate: Core courses: thermodynamics, microstructure... (Beowulf cluster)
(@University of Pennsylvania)
Second year graduate: Qualifying exam. (Molecular Dynamics code in C/C++)
Third year graduate: Thermal conductivity of silicon nanowire. (another Beowulf cluster, software system, security)
I didn't waste my time in the 7 years. Next 7 years will be more difficult, challenging and also decisive.
I will be enjoying.