Ndi chitukuko cha chikhalidwe cha anthu, sayansi ndi zamakono zimasintha tsiku ndi tsiku, mitundu ya mipando ikuwonjezeka pang'onopang'ono, ntchito zikuyenda bwino, ndipo kulondola kukukulirakulira.Komabe, kwa zaka masauzande a mbiri yakale ya mipando, kalasi yaku China ...
Werengani zambiri