If there is a webpage somewhere that contains an index of article links, try this:
https://www.mobileread.com/forums/sho...d.php?t=244119
(I assume there is no RSS feed?

)
If not, assuming you know which range of numbers you need to hit, use a for loop:
Code:
for i in range(startnumber, endnumber):
url = "http://coolshell.cn/articles/" + $i + ".html"
'''Download and add the url to your book.'''