HONG KONG — Debate over whether “Interstellar” was too brainy for mainstream Chinese audiences, too long, or simply lacking the 3D sizzle factor all seem to have been answered as the film stayed atop the mainland China box office for the second weekend.

It recorded $30.95 million over the weekend, a drop of just 25%, from 7,004 screens according to Warner Bros. That gives it a 12 day total of $82.7 million in China, Warner’s second highest score in the world’s second largest theatrical market.

Local Chinese data tracker Entgroup has “Interstellar” on a figure of $41.45 million for the past week, and a cume of $84.6 million.

“Penguins of Madagascar” rose to second place in Ent’s chart, with a $12.5 million take over the seven days to Sunday, a gain of 11% compared with a previous three day score. Over 10 days the picture stands on $24.0 million.

Chinese actioner “Rise of the Legend” delivered $12.0 million in its opening three days, comfortably ahead of Brad Pitt starrer “Fury,” which grossed $7.10 million for the same three days.

Johnnie To’s “Don’t Go Breaking My Heart 2” took a tumble from second place to fifth with a 64% decline. Still, after 13 days it has accumulated $29.4 million.

Also notable, was an expansion of the release of “The Nightingale,” China’s art-house foreign-language Oscar contender. It charted in eighth spot with $1.1 million and a cumulative total of $2.5 million after 24 days.