Sharp decline again in Tokyo Stock Market

Today's Nikkei 225 index sharply declined about 9% in a day and it is the 3rd worst in history. They say investors are afraid of having volatile assets such as stocks, commodities, high rate country's currencies, and so on. They can just rely on cash which is considered as safe asset. Anyway, I kept watching the movement today and wrote 14 article from 9am to 6pm. I could feel the countries have strong relationship in terms of economy.