library(quantmod)
getSymbols("0636.HK")
# backticks required according to
# http://stackoverflow.com/questions/23807006/deal-with-ticker-name-with-number-in-quantmod
barChart(`0636.HK`)
或
out <- getSymbols("0636.HK", env = NULL)
barChart(out, name = "0636.HK")