The financing balance of the two cities increased by 1.53 billion yuan.

[financing balance of the two cities increased by 1.53 billion yuan] as of May 31, the financing balance of the Shanghai Stock Exchange was 796.016 billion yuan, 6 million yuan less than the previous trading day; the financing balance of the Shenzhen Stock Exchange was 722.67 billion yuan, an increase of 1.536 billion yuan over the previous trading day; the two cities totaled 1,518.686 billion yuan, an increase of 1.53 billion yuan over the previous trading day.