Photo taken on Nov. 5, 2012 shows autumn leaves on a street in Seoul, South Korea. (Xinhua/Park Jin-hee)

Photo taken on Nov. 5, 2012 shows autumn leaves on a street in Seoul, South Korea. (Xinhua/Park Jin-hee)

Photo taken on Nov. 5, 2012 shows autumn leaves on a street in Seoul, South Korea. (Xinhua/Park Jin-hee)

Photo taken on Nov. 5, 2012 shows people taking photos under autumn leaves on a street in Seoul, South Korea. (Xinhua/Park Jin-hee)

Photo taken on Nov. 5, 2012 shows a man walking under autumn leaves on a street in Seoul, South Korea. (Xinhua/Park Jin-hee)

Photo taken on Nov. 5, 2012 shows autumn leaves on a street in Seoul, South Korea. (Xinhua/Park Jin-hee)