II am a general-purposed astrophysicist studying problems whose solutions may interest and get appreciated by scientifically literate people. My research interests are broad, including but not limited to orbital dynamics, tidal interaction mechanisms (dynamic tides, resonance locking), stellar pulsation (asteroseismology), physical libration, scintillation of radio signal, thermal inertia of rubble pile. Most recent work are listed below. I also enjoy teaching. I recently co-teach a summer class at UC Berkeley named 'Order of Magnitude Physics'. A short video of me teaching shallow water wave is also attached below.