韩国5月外国对本国债券的净投资增加11.34万亿韩元，而4月为增加11.26万亿韩元；5月外国对韩国股市的净投资为增加2.01万亿韩元，而4月份为减少13.59万亿韩元。

Group 1 - In May, foreign net investment in South Korean bonds increased by 11.34 trillion won, compared to an increase of 11.26 trillion won in April [1] - In May, foreign net investment in the South Korean stock market increased by 2.01 trillion won, while in April there was a decrease of 13.59 trillion won [1]