You can join in on the celebrations right now by cheering on the Year of the Ox with games, food, fireworks, and a bunch of prizes. Be sure you check your in-game mail for an invitation to the this celebration. Double click on the item in your mail to be teleported instantly to the festivities.
You’ll be taken to Divinity’s Reach where you can speak to Phaedra to buy lucky envelopes. You can also light fireworks in the Crown Pavilion. Alternatively, you can sign up for a mount race and try your skill there. Speaking to Finolla will see you teleported to the Dragon Ball Arena, while the Celestial Challenge Attendant will send you on a quest for celestial animals.
Some prizes this year include achievements to earn Lunar-Enchanted Gloves, Fortune-Shining Aureate weapons, and more. Earlier, ArenaNet provided an update on the performance issues with server lag greatly reduced.