The PLA don't take time off due to holidays. They are a 24/7 military operating forces.It is too close to Chinese New Year, they either have to start the 3rd sea trial now or will have to wait after the CNY celebration is over. IMO 3rd sea trial will likely be happened after CNY, on either late February or early March.
They do, during public holidays there will be essential personnel left behind on duty, but most will be off. Also, this isn't a purely PLA matter, sea trials are typically crewed by technical staff from the design institutes and the shipyard which will almost definitely be on holiday for CNY.The PLA don't take time off due to holidays. They are a 24/7 military operating forces.
Technically this ship is still the property of the shipyard Hudong Zhonghua, PLAN will only accept the ship after all sea trials are completed and only then it will become property of PLAN.The PLA don't take time off due to holidays. They are a 24/7 military operating forces.
Your photo is from all the way back in the (pre-)WW2 era.
And here's the hangar deck of a Nimitz-class CVN taken in 2008. Nothing much has changed since then, other than the addition of some F-35Cs.
So what's your point?

Perhaps as part of the Centenary of the PLA, PLAN will in 2027:According to @伏尔戈星图's claim on Weibo, LHD-51 Sichuan's dedicated positioning calibration for carrier-based aircraft takeoff and landing operations, as well as the actual carrier-based aircraft preparation works, are progressing.
View attachment 172933
Man, I hope Sichuan can be commissioned by mid-2027, if not before the end of this year...