-

A:

The opening price code is o.

The closing price code is C.

How to write the index code of Hong Kong stock Guotai 'an?

-

A:

The indexing methods of all kinds of software are similar, but it is not clear to learn indexing here. Suggestion: refer to the application methods of functions in various softwares, and ask specific questions separately.

{If the answer is satisfactory, please remember to adopt it}