Nov 30, 2025 通勤一小时，做了个聊股票的 voice agent / An hour-long commute, a voice agent for stocks Jun 15, 2025 BPE 漂到了自动驾驶 / When BPE drifted into autonomous driving Apr 18, 2025 SVI vs SABR：短期合约 vol smile 上的差距 / SVI vs SABR, the gap on short-tenor smiles