On 25 May, "Queqiao" approached the vicinity of the L2. After several small adjustments, "Queqiao" arrived at L2 halo orbit on 14 June. Additionally, this satellite hosts the Netherlands–China Low-Frequency Explorer (NCLE), an instrument performing astrophysical studies in the unexplored radio regime of 80 kilohertz to 80 megahertz. It was developed by the Radboud University in Netherlands and the Chinese Academy of Sciences. The NCLE on the orbiter and the LFS on the lander work in synergy performing low-frequency (0.1–80 MHz) radio astronomical observations. The lander and rover carry scientific payloads to study the geophysics of the landing zone, with a life science and modest chemical analysis capability. The lander is equipped with the following payloads:   The cost of the entre mission was close to building one kilometer of subway. The cost-per-kilometer of subway in China varies from 500 million yuan (about 72.6 million U.S. dollars) to 1.2 billion yuan (about 172.4 million U.S. dollars), based on the difficulty of construction. The landing site is within a crater called Von Kármán ( diameter) in the South Pole-Aitken Basin on the far side of the Moon that was still unexplored by landers. The site has symbolic as well as scientific value. Theodore von Kármán was the PhD advisor of Qian Xuesen, the founder of the Chinese space program. The landing craft touched down at 02:26 UTC on 3 January 2019, becoming the first spacecraft to land on the far side of the Moon. The "Yutu-2" rover was deployed about 12 hours after the landing. The selenographic coordinates of the landing site are 177.5991°E, 45.4446°S, at an elevation of -5935 m. The landing site was later (February 2019) named Statio Tianhe. Four other lunar features were also named during this mission: a mountain (Mons Tai) and three craters (Zhinyu, Hegu, and Tianjin). A few days after landing, "Yutu-2" went into hibernation for its first lunar night and it resumed activities on 29 January 2019 with all instruments operating nominally. During its first full lunar day, the rover travelled , and on 11 February 2019 it powered down for its second lunar night.