The most expensive Noah's series is "Noah's Ark: The New Beginning." This series, which was released in 2014, is the most expensive due to its high production costs and the use of cutting-edge technology. According to reports, the budget for "Noah's Ark: The New Beginning" was approximately $150 million, making it one of the most expensive Chinese television series ever produced. The series' elaborate sets, special effects, and star-studded cast contributed significantly to its high cost. Additionally, the series was produced by some of China's top production companies, further inflating the budget. The combination of these factors makes "Noah's Ark: The New Beginning" the most expensive Noah's series to date.