No matter what bond fund you buy, the rise and fall of bonds are closely related to the bank interest rate. When the bank's interest rate is expected to rise, the bond market falls, and when the interest rate continues to fall, the bond market continues to rise. The earthquake, the depreciation of the dollar and the yen are just external causes, and the real internal cause is the bank interest rate.

I think you are a steady investor, thinking that bonds can preserve and increase in value, but in fact, the income from investing in bonds is almost zero. Why? Because the rising factor of price index will offset the yield of bonds, the actual long-term average yield of bonds is zero. Every year, the price index keeps hitting new highs and the base is also rising, thus offsetting the yield of bonds. The longer the maturity of bonds, such as five-year or ten-year bonds, the lower the yield.

Suggestion: As a steady investor, your funds should be distributed in 50% bonds, 20% stocks and 30% stock index funds, which is relatively safe.