bookdown2py             Convert the Chinese headers of bookdown .Rmd
                        files into Pinyin
file.rename2py          Rename files according to a given dictionary
file2py                 Convert the characters in an entire files
                        according to a given dictionary
insert                  Title insert a character(s) before all lattin
                        letters in a string
load_dic                Load a customized dictionary.
pinyin                  Former version of py()
py                      Convert strings of Chinese characters into
                        Pinyin.
py_single               Convert a string of Chinese characters into
                        Pinyin.
pydic                   Load a Pinyin library
strsplit2               split a string and extract the _n_th string
