ChinahasurgedtheUnitedStatestorescinditsunilateraltariffmeasuresimposedontradingpartners,andsaiditwouldkeepacloseeyeonany"alternativemeasures"adoptedbyWashingtontosustainheftyduties,theMinistryofCommercesaidonMonday.

WhileChinaremainscommittedtoworkingwiththeUSformutualbenefitandthestabilityoftheglobaleconomy,officialsandanalystssaidthatBeijingwilltakefirmcountermeasuresshouldWashingtontakeanyactionthatinfringesuponitsinterests.

TheircommentscameaftertheUSSupremeCourtscrambledthetradelandscapeonFridaybystrikingdownsweepingtariffsproposedbyUSPresidentDonaldTrump.

However,hoursaftertheruling,Trumpvowedthetariffswouldquicklybereimposedinotherforms,announcingplansforanew10percent"globaltariff"underSection122oftheTradeActof1974,whichhelaterraisedto15percent.

PriortotheUSSupremeCourt'sdecision,UStariffsonChineseimportscomprisedfivelayers—2.5percentmost-favored-nationtariffs,8.4percentSection301tariffs,11percentSection232tariffs,10percentfentanyltariffsand5.1percent"reciprocal"tariffs—totaling37percent,accordingtocalculationsbyGuoshengSecurities,aState-ownedenterpriseheadquarteredinNanchang,thecapitalofJiangxiprovince.

TheSupremeCourtrulinginvalidatesthefentanyltariffsandthe"reciprocal"tariffsonChina,cuttingthebaselinerateto21.9percent.Buttheadditionofthenew15percent"globaltariff"againpushesupthecompositeratetoabout28.6percent,GuoshengSecuritiesnoted.

Chinaisconducting"acomprehensiveassessment"ofthecontentandimplicationsofthecourtruling,aspokespersonfortheChineseCommerceMinistrysaidonMonday,stressingthatChinahasconsistentlyopposedallformsofunilateraltariffmeasures.

ThespokespersonnotedthattheUS'unilateralactions,includingtheso-called"reciprocal"tariffsandfentanyltariffs,notonlyviolateinternationaltraderulesbutalsocontraveneUSdomesticlawandservetheinterestsofnoparty.

"WehavealsonotedthattheUSisreportedlypreparingalternativemeasures,suchastradeinvestigations,tomaintaintariffsontradingpartners,"thespokespersonsaid."Chinawillcloselymonitorthesituationandtakefirmactionstosafeguarditslegitimateinterests.

"FactshaveshownthatbothChinaandtheUSstandtobenefitfromcooperationandlosefromconfrontation,"thespokespersonadded.

RelationsbetweenChinaandtheUS,afterexperiencingseveralupsanddownsandmultipleroundsoftradetalksoverthepastyear,achievedan"overalldynamicstability",asdescribedbyChineseForeignMinisterWangYi.FollowingthelatesttradeconsultationsinMalaysiainOctober,thetwocountriesagreedtoextendtheirtarifftruceforoneyear.

LuoZhiheng,chiefeconomistandheadoftheresearchinstituteatYuekaiSecurities,said,"TheUSstillretainsrelativelyhightariffsonChina,anditseffortstocontainChinainhigh-techsectorsremainunabated."

Ultimately,theupperhandinfuturenegotiationsbetweenChinaandtheUSdependsoneachside'scoreleveragepoints—theirrespectiveeconomicresilienceandtechnologicalstrength,Luoadded.

ForChina,thekeytomitigatingtheimpactofexternaluncertaintiesandsecuringtheinitiativeinthelong-termChina-UStradedynamicsliesinstrengtheningitseconomicfundamentals,enhancingitscapacityforindependenttechnologicalinnovationandmaintainingstrategicresolveamidacomplexandevolvinginternationallandscape,addedLuo,YuekaiSecurities'chiefeconomist.

XiongYuan,chiefeconomistatGuoshengSecurities,pointedtofundamentalconstraintsthatrenderSection122unsuitableasalong-termtariffmechanism.Thestatuteimposesahard150-daytimelimitonanydutiesimposed,expiringinlateJulyunlessextendedbyanactoftheUSCongress.

TheTrumpadministration'sinvocationofSection122islikelytoserveasonlyaninterimmeasure,withXionganticipatingamidtermpivotbacktothemoredurablelegalframeworksofSections301and232.

SeanStein,presidentoftheUS-ChinaBusinessCouncil,saidhehopesthatfuturetradetalkscanmovebeyondtariffs,taxratesandexportcontrolstoexplorehowthetwoeconomiescancooperatemoreeffectively,enablingcompaniesfrombothcountriestobettercompeteandoperateineachother'smarkets.

"TheUSandChinaaretheworld'stwolargest,mosttechnologicallyadvancedandmostdynamiceconomies.Therearealotofthingsthatweneedtogetrightontheeconomicfront,"Steinsaid.