Obelisk introduction: On the site, there are many tall granite obelisks and huge stone pillars. These obelisks and stone pillars were built around AD 306. The monuments are generally 3 to 4 meters high and are carved directly from granite rocks. There was originally a group of seven obelisks on the site, five of which have long since collapsed. One of the remaining two is 33 meters high, and the other is 24 meters high. There is a shield-like pattern carved under the top of the monument.