photonics II

yay today physics advanced so fun!

hmph spent the whole day at ziteng's house doing work. supposed to give tuition but always no money. never mind, must not be so materialistic right?

and my sister thinks that the hamster is pregnant again >.< until now, we have 2+4+5 hamsters. hmm maybe she'll give birth to 6 this time!

downloaded gershwin's prelude no.1. hmm next piece to try.