An An and Yin-Long

An An and Yin-Long (Mandarin: 安安和银龙/银龍) are two Chinese coaches Thomas meets during his visit to China. They usually work with Hong-Mei and Thomas during his Chinese passenger runs. Occasionally, Yong Bao pulls them.
== Personalities ==
Both coaches are cheerful and bring out an engines' friendliness, and due to working all around China, they have extensive knowledge of the country's routes.
== Technical Details ==
=== Basis ===
An An and Yin-Long are based on the LB&SCR Stroudley coaches.
=== 
Livery ===
An An and Yin-Long are painted teal green with yellow wheels and lining.
== Appearances ==
=== Television Series ===
* Series 22 - Number One Engine, Thomas in the Wild, The Water Wheel and Thomas and the Dragon
* Series 23 - Wish You Were Here
==== Music Videos ====
* Series 22 - The Journey Never Ends, All the Girls Around the World and Let's Dream
==== Videos ====
* 2018 - Meet Hong-Mei of China!
== Voice Actors ==
An An:
* Siu-see Hung (UK/US)
* Erina Yamazaki (Japan)
* Franciska Friede (Germany)
* Amanda Hinojosa (Latin America)
Yin-Long:
* Windson Liong (UK/US)
* Kunihiro Kawamoto (Japan)
* Oliver Hermann (Germany)
* Alan Prieto (Latin America)
== Trivia ==
* Yin-Long's name means "silver dragon" in Mandarin.
* Some promotional articles for the twenty second series refer to Yin-Long as ZiLong while the 2019 annualrefers to him as Lin Yong.
* The yellow symbol painted on their sides is the Shou, a word that means "longevity".
* An-An and Yin Long have undergone some aesthetic changes throughout the series:
** Series 23:
*** Their faces are reduced in size.
== Merchandise ==
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=== Motorized Railway ===
{| class="wikitable sortable jquery-tablesorter"	Name	Released	Discontinued	Highlights	Image	An An	2018	N/A	
* Only available in Rainbow Mountain Set