The high probability of a sudden sharp rise in bond funds is fund redemption, which will generate a large amount of redemption fees. The fund redemption fees are included in the fund assets, which makes the net value of the fund rise sharply. Net value of fund unit = total market value/share after closing.

Bond funds invest in the bond market, so the fund's ups and downs are relatively stable. The huge increase in fund redemption will not have a substantial impact on investors.