Why the Snow Dragon II was delivered late

There is no late delivery of Snow Dragon 2. Snow Dragon 2 polar research vessel (H2560) is China's first independently built polar scientific research icebreaker, officially started construction in September 2017, delivered in July 2019, less than two years on the successful delivery of the use of the ship, can be said to be highly efficient and fine technology goes hand in hand, so there is no late delivery of the use of the ship.