Problem:
In Chinese environment (locale: simplified Chinese, gb18030), when sharing some files or folder with Chinese characters (smb://ip_of_shared_folder), they cannot be accessed  through the network.
This happens because the coding is different.

Solution:
Create a configuration file named smbshared-lang.conf in /etc/samba/, and, if you use GB18030, write the following lines:

[LANG]
lang=zh_CN.GB18030

If you want to change it back to UTF8, just remove this file or make it empty or modify lang to something else.
After creating /etc/samba/smbshared-lang.conf or modifying it, you need to restart the service "shared" or run GUI tool again to make it available.