Jiajiang is a city in Sichuan.
Bus #1 and #8 (both 1.5¥, Aug 2013) travel from directly opposite Jiajiang bus station to the main gate Thousand Buddha Cliff. From the main gate, the cliffs containing the Buddhas and ticket office are about a ten or fifteen minute walk along the riverfront.
The cliffs can be considered a good stopover on the way to Chengdu from Emei (or the other direction), as they break up the 2-3 hour journey midway. Whilst there are many more higher rated sights in the Sichuan area (The Thousand Buddha Cliff is rated 2A by the tourism authority), it is typically extremely quiet and often a nice place to visit to get away from the thousands of tourists that flock to the other higher rated areas. It is debatable as to whether it is worth a day in a tight travel schedule.
Both bus 1 and 8 pass through the main market square on their way to/from the Thousand Buddha Cliff. There are many local (and cheap) eateries in this area, along with other shops.