Hi Mei; that's a Graptopetalum of some kind. Needs sun and a pot with drainage. Don't water to often and to much. Once every two / three weeks (depends on the place) and let it dry completely inbetween. If a leaf falls of during repotting, just lay it in a pot with some dry sand and in a few weeks you will have a new little plant. Flowers (somewhere in spring or summer) will be white, maybe with some red spots. Good look; don't spoil him with food and water. :)

Harry

Grab a plastic pot saucer and pot plus a small bag of perlite. Seive the perlite and use the bigger bits, mix them 50/50 with good quality c/s mix. If you can’t go to expense of the new c/s mix try to get off as much as you can from the roots and mix that with the perlite, then repot. Likewise an old china saucer will do. Use a regular plastic plant pot so it will have holes for drainage. Don’t use a tight fitting outer pot as you can’t see any run off water as succs don’t like wet feet, they positively hate them! Mix the perlite throuought the mix, no layers please and defo no pebbles in the bottom of the pot as you may have read elsewhere! When you water, water thoroughly, drain on drying board perhaps and sit on saucer when no more runs out.

Hope it thrives for you and good luck at uni :-)

Gill