it's divided into two series: 怒海潜沙 - first 12 episodes, and 秦岭神树 - rest 28
now i checked and it's even more confusing: from episode 36 (that is 24th episode of 秦岭神 树) under the title there is subheading '之云项前传'. because last 5 episodes from 秦岭神树 are prequel of 云顶天宫. summarizing: the lost tomb 2 in China are two non separate series aired together as '怒海潜沙&秦岭神树' with an english name 'Explore with the note' first 'part' - '怒海潜沙' - has 12 episodes and it's adapted from 2nd book of Daomu Biji (Grave robbers' Chronicles/Note), episode 13th is 1st episode of '秦岭神树', which is adapted from 3rd book of novel series till episode 35 - that adaptation has 23 episodes, last 5 episodes of 秦岭神树 are prequel of adaptation of 云顶天宫 - 4th book of novel series. altogether we have 40 episodes under one name. why are they broadcasted together? maybe because they have the same cast
https://www.0519cy.com/vod-play-id-6262-src-1-num-1.html
summarizing:
the lost tomb 2 in China are two non separate series aired together as '怒海潜沙&秦岭神树' with an english name 'Explore with the note'
first 'part' - '怒海潜沙' - has 12 episodes and it's adapted from 2nd book of Daomu Biji (Grave robbers' Chronicles/Note),
episode 13th is 1st episode of '秦岭神树', which is adapted from 3rd book of novel series till episode 35 - that adaptation has 23 episodes,
last 5 episodes of 秦岭神树 are prequel of adaptation of 云顶天宫 - 4th book of novel series.
altogether we have 40 episodes under one name.
why are they broadcasted together? maybe because they have the same cast