China and Russia signed a preliminary agreement  about a 15 billion dollars investment on 9th June. This is the biggest one of the 8 investment plans signed on the first day of the China&Russia invest forum which lasted two days. This plan is that China invest about 1.25 billion dollars to built housing mixed use area in Russia.The officials of China and Russia also lie the foundation of mixed use area of the Baltic Pearl.This mixed use area will apply houses for 35 thousand people.Other invest fiels are the timber industry invested by China in Khabarovsk of Russia, the agriculture industry ivested in Novgorod where lied on Northwest of Russia.German Gref ,who is the trade and development minister of Russia said ,this agreement indicates that the cooperation between China and Russia has changed,and also incarnates the geographic zones between China and Russia are very abroad. German Gref said the bilateral trade volume between China and Russia has rised about 1/3 in 2004 ,it has reached 2.13 billion dollars,and until 2010 ,it will reach 60 billion dollars. The investment of China in Russia has increaced 82% .However,German Gref said the invest experience's lack and the politics' balk eased the icreacement of the investment.Ma Kai,who is the director of chinese changement committee said investment is the power of the cooperation between China and Russia.He also said that China hopes to sign the protect agreement with Russia as soon as possible.