AnaerialdronephototakenonJan.13,2024showstouristsenjoyingthescenebytheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)ThisphototakenonJan.13,2024showsaviewoftheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)AnaerialdronephototakenonJan.13,2024showstouristsenjoyingthescenebytheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)AnaerialdronephototakenonJan.13,2024showsaviewoftheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)ThisphototakenonJan.15,2024showsaviewoftheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)AnaerialdronephototakenonJan.16,2024showsstaffmemberscollectinglitterintheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)AnaerialdronephototakenonJan.15,2024showsaviewoftheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)StaffmemberscollectlitterintheDianchiLakeinKunming,southwestChina'sYunnanProvince,Jan.16,2024.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)ThisphototakenonJan.15,2024showsaviewoftheDianchiLakeinKunming,southwestChina'sYunnanProvince.TheoverallwaterqualityofDianchiLakehasbeenmaintainedforsixconsecutiveyearssinceitreachedClassIVinthecountry'sfive-tierevalsuationsystemforthefirsttimein2018.(Xinhua/HuChao)Editor:DisclaimerTheviewsandopinionsexpressedinthisarticlearethoseoftheauthor's,GMW.cnmakesnorepresentationsastoaccuracy,suitability,orvalidityofanyinformationonthissiteandwillnotbeliableforanyerrors,omissions,ordelaysinthisinformation.