I make relation between Purchase Order Line and Request Order Line

The relation is manytomany

How I done that via

Code .py

class MaterialRequestRelated(models.Model):
   _inherit = 'purchase.order'
request_id =  fields.Many2many('purchase.request.line',string='Request  Order')

view .xml

 <record id="purchase.purchase_order_form_inhirit"  model="ir.ui.view">
<field name="name">purchase.order.form</field>

<field name="model">purchase.order</field>
<field name="inherit_id" ref="purchase.purchase_order_form"/>
 
 <field name="arch" type="xml" 
<xpath expr="/form/sheet/notebook" position="inside"

<page name="Material_Request" string="Material Request" 
<field name="request_id"/
<field name="id"/
                         </page>   </xpath>    </field>   </record

Now I want to make tree view to show the table but when I create the view its showing the relation table

Via the code

 fff


<record id="purchase_request_line_Tree"
model="ir.ui.view">


<field
name="name">purchase.order.MaterialRequestRelated.tree</field>

<field name="model">purchase.order</field
 <field name="arch" type="xml"
 <tree> 
   <field name="id"/>
      
</tree>

</field>

</record> 

My question is how can I show the two table they have the relation not the relation table it show