This is an example implementation of Lawnstrings Server for PvZ2: Chinese Version
Lawnstrings file obtained from the server overrides the one found in dynamic.rsb.smf/config.rsb
Both files contain Base64 string which when being decoded turns into Encrypted RTON file. After decrypting the RTON file you will get the data which is using 32-bit PopCap Zlib. After uncompressing the data - you will get the plain text file.
I recommend to use Sen by Haruma to Decode & Encode these two files.
file_list.txt - contains the Lawnstrings file name and MD5 Hash of it.
pvz2_l.txt - Lawnstrings file itself
You can check both files in readable format at Plain Data Example