Before revision:  In this paper, we propose Multi-step Hindsight Experience Replay (MHER) based on n-step relabeling , incorporating multi-step relabeled returns  to improve sample efficiency.
After revision:  In this paper, we propose Multi-step Hindsight Experience Replay (MHER) based on n-step relabeling , incorporating multi-step relabeled returns based on n-step relabeling to improve sample efficiency.