MuYi

Results 2 issues of MuYi

**Describe the bug (__required__)** Refer to https://discuss.nebula-graph.com.cn/t/topic/14070 There's something wrong with toString(datetime()) **Your Environments (__required__)** v3.6.0 **Expected behavior** The string should return the correct time zone **Additional context** -

type/bug
severity/none
affects/none