How Old Is Lei Lei? Fact-Checking Tokyo's Twin Panda Age, Lineage, and China Return
Every giant panda cub born outside mainland China operates on a predetermined diplomatic and ecological calendar. The following factual record illustrates the progression of the Ueno family unit from arrival to repatriation:
| Panda Name | Sex & Lineage | Birth Date | Location / Repatriation Status |
|---|---|---|---|
| Ri Ri (Father) | Male (Wild-born line) | August 16, 2005 | Returned to Sichuan (September 2024) |
| Shin Shin (Mother) | Female (Bifengxia line) | July 3, 2005 | Returned to Sichuan (September 2024) |
| Xiang Xiang | Female (First cub) | June 12, 2017 | Transferred to Ya'an Bifengxia Base (Feb 2023) |
| Xiao Xiao | Male (Fraternal twin) | June 23, 2021 | Ueno Zoo; scheduled for Sichuan transfer |
| Lei Lei | Female (Fraternal twin) | June 23, 2021 | Ueno Zoo; scheduled for Sichuan transfer |
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