If you don't like sad ending, I recommend you don't watch this. In the end the older brother Long Haiyi was trying to save his little brother ended up drifting away to the sea and no one can find his whereabout, and Long Riyi has fallen into a coma. Zhang Jingmei ended up leaving her family and going somewhere else.
Ep 28 is the last episode, but it has 2 endings. 1- they end up together and the uncle became king. 2- they did not end up together and he stayed alone forever.