Previously, it had bounced upside from 159 level on 12th May (1d chart) it will most probably test that level before going upside.
If it moves further down below 159 level then it will test support range of 140-135. Till then keep an observation..
Also, once it breaks 20 upside, one can think of buying as it moved upward on 20th May (1D chart) but it will face resistance at 50 and 200 above like it faced on 20th April at 50 & 200 on 3rd July & 11th Aug.
On a safer side for a long term, it would be better to wait till it breaks 200 and buying above 206.
*This view is based on my and is for educational purpose only. Please feel free to discuss if I'm wrong somewhere.