Time and space fortress (Japanese: time and space fortress; ロス; English: Macross, which was called a space battleship when it was broadcast by Chinese TV companies, is a 36-episode Japanese TV animation. The play is considered as a milestone in the Japanese animation era, and it is also called the three immortal series of Japanese military sci-fi animation with the space battleship Yamato and the mobile suit Gundam. The fortress of time and space describes the experiences of several couples in Star Wars. American Golden Harmony Company bought the copyright of the film and adapted it into robotech, which was a great success. In addition, the super Nintendo game "Time and Space Fortress" is considered as "the most difficult shooting game in the history of exceeding the contract". Therefore, macross has become synonymous with "extremely difficult".