@article{x1learningtothinkadaptivelyacrosslanguag,
  title = {x1: Learning to Think Adaptively Across Languages and Cultures},
  author = {Yangfan Ye and Xiaocheng Feng and Xiachong Feng and Yichong Huang and Zekun Yuan and Lei Huang and Weitao Ma and Qichen Hong and Yunfei Lu and Dandan Tu and Bing Qin},
  year = {2026},
  eprint = {2604.16917},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.16917},
}