心里酸酸的因为开始想念了

Argh!!! Not enough time for me!!!

Stolper-Samuelson theorem

Hecksher-Ohlin theorem

international trade is really complicated!

last subject to go!!!

rybczynski theorem

Good Luck to You and I

Kampar is too famous recently!!

Peace has much to do with warm-heartedness and respect for the lives of others. - DalaiLama