Chuuren poutou
Chuuren poutou (九連宝燈) is a yakuman. It contains the 13-tile pattern 1-1-1-2-3-4-5-6-7-8-9-9-9 of the same suit, plus any one more tile from the suit. A chuuren poutou tenpai with the specific pattern already in place has a 9-sided wait, the winning hand is then called junsei chuuren poutou (純正九蓮宝燈).
The 13-tile pattern generates a 9-sided wait even as a normal hand with four sets and a pair. Chuuren poutou is therefore no hand shape exception, unlike chii toitsu and kokushi musou.
Tile pattern
Regular
Agari: 
- Note: This hand can also win with
. However, that would downgrade the hand to a mere chinitsu.
Nine tile wait
Agari: Any pinzu 1 through 9.
English reference
- Nine gates for the regular pattern
- Pure nine gates for the 9 wait pattern
Value
As a yakuman, it is worth 32,000 points for a non-dealer and 48,000 points for the dealer.
Some rules award a double yakuman instead when the hand goes out from the 9-sided wait.