AFRICAN MIRROR REPORTER ACCORDING to African custom, it rains when a king is buried.  The heavens opened up last night as the remains of Amazulu King Goodwill Zwelithini arrived at home and was later interred in a secret and sacred ceremony attended by a select group of men closest to him.  The late King, who ruled over 12-million Amazulu for five decades, was buried at dawn today in an area called “The Valley of Kings”, in KwaNongoma, in northern KwaZulu-Natal, a week after he died from diabetes complication and Covid-19. Thousands of traditionally clad men, members of Amabutho - regiments…