▁In ▁ 1 9 9 4 , ▁Chinese ▁Premier ▁Li ▁P eng ▁signed ▁a ▁treat y ▁of ▁friendship ▁and ▁co operation . ▁China ▁has ▁become ▁Mong olia ' s ▁biggest ▁trade ▁partner ▁and ▁source ▁of ▁foreign ▁invest ment . ▁Bil ater al ▁trade ▁reached ▁US $ 1 . 1 3 ▁billion ▁by ▁the ▁first ▁nine ▁months ▁of ▁ 2 0 0 7 , ▁register ing ▁an ▁increase ▁of ▁ 9 0 % ▁from ▁ 2 0 0 6 . ▁China ▁offered ▁to ▁allow ▁the ▁use ▁of ▁its ▁T ian jin ▁port ▁to ▁give ▁Mong olia ▁and ▁its ▁goods ▁access ▁to ▁trade ▁within ▁the ▁Asia ▁Pacific ▁region . ▁China ▁also ▁expanded ▁its ▁invest ments ▁in ▁Mong olia ' s ▁min ing ▁indust ries , ▁giving ▁it ▁access ▁to ▁the ▁country ' s ▁natural ▁resources . ▁Mong olia ▁and ▁China ▁have ▁stepped ▁up ▁co operation ▁on ▁fighting ▁terror ism ▁and ▁bol ster ing ▁regional ▁security . ▁China ▁is ▁likely ▁to ▁support ▁Mong olia ' s ▁membership ▁in ▁to ▁the ▁Asia ▁Co operation ▁Dialog ue ▁( AC D ), ▁Asia - P ac ific ▁Econom ic ▁Co operation ▁( AP EC ) ▁and ▁grant ing ▁it ▁observer ▁status ▁in ▁the ▁Shang hai ▁Co operation ▁Organ ization . ▁ ▁See ▁also ▁Mong olia - T ai wan ▁relations ▁V ost ok ▁ 2 0 1 8 ▁ 2 0 1 5 ▁China ▁Vict ory ▁Day ▁Par ade ▁ ▁References ▁ ▁Further ▁reading ▁▁ ▁G ins burg , ▁Tom . ▁" Pol it ical ▁reform ▁in ▁Mong olia