There is no direct train from Hangzhou to Yanji, so you can only take a special bus.
I'll give you several schemes for you to choose from, among which the most economical, fastest and latest scheme.
Scheme 1 Hangzhou -> Jinan -> Yanji (the cheapest way to travel)
Departure train from Hangzhou to Jinan Travel time Travel distance Fare for this interval
2556/2557 (Hangzhou-Dongying) 17:54 11:21 16 hours and 26 minutes 1196 kilometers 68 yuan
Transit train from Jinan East to Yanji Travel time Travel distance Fare for this interval
1254/ 1255 (Qingdao-Yanji) 23:45 15:17 1 days, 5 hours and 22 minutes 1855 kilometers 115 yuan
Scheme 2 Hangzhou -> Shenyang North -> Yanji (the shortest travel time)
Travel time of departure train from Hangzhou East to Shenyang North
Travel distance of this interval fare
K552/K553 (Wenzhou-Harbin) 21:42 23:55 1 1 days, 3 hours, 13 minutes, 2189 kilometers, 242 yuan
Travel time of connecting train from Shenyang to Yanji, travel distance of this interval fare
K7333 (. Tianjin->; Yanji (shortest travel distance)
Travel time and travel distance of departure train from Hangzhou to Tianjin
Fare of this interval p>T34 (Hangzhou-Tianjin) 14:11 19:28 19 hours and 28 minutes 1325km 182 yuan
Travel time and travel distance of connecting train from Tianjin to Yanji
Fare of this interval p>K215 (Beijing-Tumen) 115. Changchun->; Yanji
Departure from Hangzhou East to Changchun Travel Time Travel Distance Fare
K552/K553 (Wenzhou-Harbin) 21:42 13:31 1 1 days 6 hours 49 minutes 2489 kilometers 271 yuan
Transit train from Changchun to Yanji Travel Time Travel Distance Fare
K7333 (Dalian-Yanji) 14. Shenyang North -> Yanji
Travel time and distance of departure train from Hangzhou East to Shenyang North
K76/K77 (Ningbo-Jilin) 19:32 23:31 1 1 days, 3 hours and 59 minutes, 2,223 kilometers, 245 yuan
Travel time and distance of connecting train from Shenyang to Yanji
K7333 (Dalian-Yanji) Jinzhou->; Yanji
Departure train from Hangzhou East to Jinzhou Travel Time Travel Distance Fare
K552/K553 (Wenzhou-Harbin) 21:42 21:16 1 days 34 minutes 1956 km 219 yuan
Transit train from Jinzhou South to Yanji Travel Time Travel Distance Fare
K215 (Beijing-Tumen) 215. Shenyang North -> Yanji
Travel time and travel distance of departure train from Hangzhou East to Shenyang North
Fare of this interval: K552/K553 (Wenzhou-Harbin) 21:42 23:55 1 1 days, 3 hours and 13 minutes, 2189 kilometers, 242 yuan
Travel time and travel distance of connecting train from Shenyang North to Yanji
Fare of this interval: K215 (Beijing-Tumen) Jilin -> Yanji
Departure train from Hangzhou East to Jilin Travel Time Travel Distance Fare
K76/K77 (Ningbo-Jilin) 19:32 16:27 1 days 11 hours 55 minutes 2666 kilometers 281 yuan
Transit train from Jilin to Yanji Travel Time Travel Distance Fare
K215 (Beijing-Tumen) 17. Chaoyang Town -> Yanji
Departure train from Hangzhou East to Chaoyang Town Travel Time Travel Distance Ticket Price
K76/K77 (Ningbo-Jilin) 19:32 13:39 1 days, 8 hours and 7 minutes, 2,483 kilometers, 266 yuan
Transit train from Chaoyang Town to Yanji Travel Time Travel Distance Ticket Price
K215 (Beijing-Tumen). Rock -> Yanji
Departure train from Hangzhou East to Yanshi Travel Time Travel Distance Fare
K76/K77 (Ningbo-Jilin) 19:32 14:11 1 Days 8 hours 38 minutes 2522 kilometers 271 yuan
Transit train from Yanshi Travel Time Travel Distance Fare
K215 (Beijing-Tumen) 15.