中文key转拼音key

大佬：我现在有个大json数据，里面有很多层级，大json数据里面的key全部都是中文的，现在需求是需要把里面的中文key快速变成拼音key，且能保持原有中文key的一些顺序，有什么好的办法吗？？

比如：
[
{
"姓名"："张三",
"年龄"："8岁"
},
{
"姓名"："李四",
"年龄"："9岁"
}
]

转化后为：
[
{
"xm"："张三",
"nl"："8岁"
},
{
"xm"："李四",
"nl"："9岁"
}
]

The issue describes recursively converting Chinese JSON keys to pinyin keys while preserving their order, with an example, but names no files, tests, or entry points. Start by locating the JSON key transformation or serialization APIs; done means the nested example converts consistently to pinyin keys without changing key order.

Written by the indexing model from the issue text.