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1、AdvantagesofTea-DrinkingTeahasbeenoneofthedailynecessitiesinChinasincetimeimmemorial.Countlessnumbersofpeopleliketohavetheiraftermealtea.Insummerorwarmclimate,teaseemstodispeltheheatandbringoninstantcooltogetherwithafeelingofrelaxation.Forthisreason,tea-housesaboundintownsandmarketvillag
2、esinSouthChinaandprovideelderlyretireeswiththelocalestomeetandchatoveracupoftea.Medically,thetealeafcontainsanumberofchemicals,ofwhich20-30%istannicacid,(丹宁酸)knownforitsanti-inflammatory（炎的）andgermi’cidal(杀菌的)properties.Italsocontainsanalkaloid生物碱(5%,mainlycaffeine),astimulantforthenerve
3、centreandtheprocessofme’tabolism.新陈代谢Teawiththearomaticsinitmayhelpresolvemeatandfatandthuspromotedigestion.Itis,therefore,ofspecialimportancetopeoplewholivemainlyonmeat,likemanyoftheethnicminoritiesinChina.Apopularproverbamongthemsays,"Rathergowithoutsaltforthreedaysthanwithoutteaforasi
4、ngleday."Teaisalsorichinvariousvitaminsand,forsmokers,ithelpstodischargenicotineoutofthesystem.Afterwining,strongteamayprovetobeasoberingpick-me-up.Theabove,however,doesnotgotosaythatthestrongerthetea,themoreadvantagesitwillyield.Toomuchtannicacidwillaffectthese‘cretionofthegastricjuice（
5、胃液）,irritatethemembraneofthestomachandcauseindigestionorconstipation.Strongteatakenjustbeforebedtimewillgiverisetooccasionalinsomnia.Constantdrinkingofover-strongteamayinduceheartandblood-pressuredisordersinsomepeople,reducethemilkofabreast-feedingmother,andputabrowncolorontheteethofyoun
6、gpeople.Butitisnotdifficulttowardofftheseundesirableeffects:justdon'tmakeyourteatoostrong.TeadrinkingcustomsApotofChineseteaThereareseveralspecialcircumstancesinwhichteaispreparedandconsumed.·Asasignofrespect:InChinesesociety,theyoungergenerationalwaysshowsitsrespecttotheoldergenerationb
7、yofferingacupoftea.Invitingandpayingfortheirelderstogotorestaurantsforteaisatraditionalactivityonholidays.Inthepast,peopleoflowerrankservedteatohigherrankingpeople.Today,asChinesesocietybecomesmoreliberal,sometimesathomeparentsmaypouracupofteafortheirchildren,orabossmayev
