Nelson Mandela's Houghton house in Johannesburg, South Africa, on June 25, 2013. South Africans on Monday were holding their breath over former President Nelson Mandela's health that has deteriorated from serious to critical. Mandela, 94, has been hospitalized for a recurring lung problem since June 8. Photo: Xinhua" src="http://www.globaltimes.cn/Portals/0/attachment/2011/07bf0dd3-44ee-4111-83ed-af4323468c8a.jpeg" />

Media workers gather at former South African President Nelson Mandela's Houghton house in Johannesburg, South Africa, on June 25, 2013. South Africans on Monday were holding their breath over former President Nelson Mandela's health that has deteriorated from serious to critical. Mandela, 94, has been hospitalized for a recurring lung problem since June 8. Photo: Xinhua

Media workers gather at former South African President Nelson Mandela's Houghton house in Johannesburg, South Africa, on June 25, 2013. South Africans on Monday were holding their breath over former President Nelson Mandela's health that has deteriorated from serious to critical. Mandela, 94, has been hospitalized for a recurring lung problem since June 8. Photo: Xinhua

Media workers gather at former South African President Nelson Mandela's Houghton house in Johannesburg, South Africa, on June 25, 2013. South Africans on Monday were holding their breath over former President Nelson Mandela's health that has deteriorated from serious to critical. Mandela, 94, has been hospitalized for a recurring lung problem since June 8. Photo: Xinhua