AGB stars are very important in stellar evolution. The death of most stars with 1-8 solar mass is a result of heavy mass loss in this phase. After losing the stellar envelope, they evolve to post-AGB stars with higher temperature at almost constant luminosity. In observations, the gas envelope evolves to asymmetry structures and massive material is suddenly ejected by bipolar or multipolar outflows. These objects are classified as pre-planetary nebulae (or PPN) because it takes only a few hundred years evolving into the planetary nebula phase, leaving a white dwarf and ionized gas envelope in space. When we look into the sky, there are various shapes of the planetary nebulae. Studying the properties of outflows can help us to understand the complex physics and chemistry in the planetary nebulae. I’ll present recent research on three of our targets, CRL 618, Cotton Candy Nebula, and V Hydrae, possessing multi-directional and multi-epoch outflows. We explore a possible scenario where the mass loss of AGB stars could be periodically accreted by a companion passing of the periastron in a high-eccentricity orbit, forming disks and multipolar outflows.